Monday, September 30, 2019

God-given attributes Essay

The 19th century held some of the very best traditions and practices the United States had. Yet, some of them today are not existent anymore due to the fact that the concept of the â€Å"American Dream† is slowly fading from the recesses of our very consciousness. If we are to examine the art of the late 19th century, we can observe that the paintings project an old fashioned way of American life, where people do what is right and honorable; a peaceful way of life. It is a life full of hopes and dreams that the American people will work and progress further together into the future. Each individual, as a free man, can do what he can with his God-given attributes. The concept of the â€Å"American Dream† has changed so much to the extent that the perception nowadays is that financial stability is the gauge of living this dream. Working parents are always scampering out of their homes in search of monetary gain, leaving their kids behind to care for themselves. This effectuates circumstances of broken homes, where children are neglected and not taught the honest ways of life; thus, they grow as individuals lacking good character traits. This eventually leads to the erosion of the American society; the breaking down of the social structure based on the â€Å"American Dream† concept. If we are to retain the things that make us good Americans, then we have to compromise with ourselves and with our fellow man for the benefit of everybody. Development is not at all bad; yet, we have to integrate some of the fine old-fashioned ways of the 19th century with that of the present in order to alleviate the effects brought upon by some of the destructive ways of present living.

Sunday, September 29, 2019

Review Chemistry Chapter 4

CHAPTER 4 REACTIONS IN AQUEOUS SOLUTION MULTIPLE CHOICE QUESTIONS 4. 1Which of the following compounds is a strong electrolyte? E A. H2O B. O2 C. H2SO4 D. C6H12O6 (glucose) E. CH3COOH (acetic acid) Answer: C 4. 2Which of the following compounds is a strong electrolyte? E A. H2O B. N2 C. KOH D. C2H6O (ethanol) E. CH3COOH (acetic acid) Answer: C 4. 3Which of the following compounds is a weak electrolyte? E A. HCl B. CH3COOH (acetic acid) C. C6H12O6 (glucose) D. O2 E. NaCl Answer: B 4. 4Which of the following compounds is a weak electrolyte? E A. HCl B. NH3 C. C6H12O6 (glucose) D. N2 E. KClAnswer: B 4. 5Which of the following compounds is a nonelectrolyte? E A. NaF B. HNO3 C. CH3COOH (acetic acid) D. NaOH E. C6H12O6 (glucose) Answer: E 4. 6Which of the following compounds is a nonelectrolyte? E A. NaOH B. HNO3 C. CH3COOH (acetic acid) D. KF E. C2H6O (ethanol) Answer: E 4. 7Identify the major ionic species present in an aqueous solution of NaNO3. M A. Na2+, NO3 – B. Na+, N3 â€⠀œ , O3 C. Na+, N3 -, O32 – D. Na+, N+, O2 – E. Na+, NO3 – Answer: E 4. 8Identify the major ionic species present in an aqueous solution of Ca(OH)2. E A. Ca2+, H+, O2 – B. Ca2+, OH2- C. Ca+, H-, O2 – D.Ca2+, O2H22 – E. Ca2+, OH – Answer: E 4. 9The distinguishing characteristic of all electrolyte solutions is that they: E A. contain molecules B. conduct electricity C. react with other solutions D. always contain acids E. conduct heat Answer: B 4. 10According to the solubility rules, which one of the following compounds is insoluble Ein water? A. NaCl B. MgBr2 C. FeCl2 D. AgBr E. ZnCl2 Answer: D 4. 11According to the solubility rules, which one of the following compounds is insoluble Ein water? A. Na2SO4 B. BaSO4 C. CuSO4 D. MgSO4 E. Rb2SO4 Answer: B 4. 2According to the solubility rules, which one of the following compounds is insoluble Ein water? A. CaCO3 B. (NH4)2CO3 C. Na2CO3 D. K2CO3 E. KNO3 Answer: A 4. 13According to the solubili ty rules, which one of the following is soluble in water? E A. Hg2Cl2 B. Na2S C. Ag2CO3 D. Ag2S E. BaSO4 Answer: B 4. 14According to the solubility rules, which one of the following is soluble in water? E A. AgBr B. AgCl C. Ag2CO3 D. AgNO3 E. Ag2S Answer: D 4. 15According to the solubility rules, which one of the following is soluble in water? E A. (NH4)3PO4 B. Ca3(PO4)2 C. AlPO4 D.Ag3PO4 E. Mg3(PO4)2 Answer: A 4. 16According to the solubility rules, which one of the following is soluble in water? E A. CaSO4 B. BaSO4 C. PbSO4 D. K2SO4 Answer: D 4. 17In accordance with the solubility rules, which of the following will occur when Msolutions containing about 0. 1 g of Pb(NO3)2(aq) and KI(aq) /100 mL are mixed? A. KNO3 will precipitate; Pb2+ and I- will be spectator ions. B. No precipitate will form. C. Pb(NO3)2 will precipitate; K+ and I- will be spectator ions. D. PbI2 will precipitate; K+ and NO3- will be spectator ions. E. Pb2+ and I- will be spectator ions, and PbI2 will precipitat e. Read this Practice Test Chem 105Answer: D 4. 18In accordance with the solubility rules, which of the following will occur when Msolutions of CuSO4(aq) and BaCl2(aq) are mixed? A. CuCl2 will precipitate; Ba2+ and SO42 – will be spectator ions. B. CuSO4 will precipitate; Ba2+ and Cl – will be spectator ions. C. BaSO4 will precipitate; Cu2+ and Cl- will be spectator ions. D. BaCl2 will precipitate; Cu2+ and SO42 – will be spectator ions. E. No precipitate will form. Answer: C 4. 19In accordance with the solubility rules, which of the following will occur when Msolutions of ZnSO4(aq) and MgCl2(aq) are mixed? A.ZnCl2 will precipitate; Mg2+ and SO42 – will be spectator ions. B. ZnSO4 will precipitate; Mg2+ and Cl- will be spectator ions. C. MgSO4 will precipitate; Zn2+ and Cl- will be spectator ions. D. MgCl2 will precipitate; Zn2+ and SO42 – will be spectator ions. E. No precipitate will form. Answer: E 4. 20Which of the following is the correct net ioni c equation for the reaction that occurs M when solutions of Pb(NO3)2 and NH4Cl are mixed? A. Pb(NO3)2(aq) + 2NH4Cl(aq) > NH4NO3(aq) + PbCl2(s) B. Pb2+(aq) + 2Cl-(aq) > PbCl2(s) C. Pb2+(aq) + 2NO3-(aq) + 2NH4+(aq) + 2Cl-(aq) > 2NH4+(aq) + 2NO3-(aq) + PbCl2(s) D.NH4+(aq) + NO3-(aq) > 2NH4NO3 Answer: B 4. 21The common constituent in all acid solutions is: M A. H2 B. H+ C. OH- D. H2SO4 E. Cl- Answer: B 4. 22Identify the ions present in an aqueous solution of LiOH. E A. Li2+, O- , H- B. Li+, OH- C. LiO-, H+ D. Li+, O2 – , H+ E. Li – , OH+ Answer: B 4. 23Identify the major ions present in an aqueous solution of HNO3. E A. HN+, O2 – B. OH- , NO3- C. OH- , NO+ D. H+, N3-, O2 – E. H+, NO3- Answer: E 4. 24What choice gives the correct formula of the salt formed in the neutralization Ereaction of hydrochloric acid and calcium hydroxide? A. CaO B.CaCl2 C. CaH2 D. CaCl E. CaClH Answer: B 4. 25What is the chemical formula of the salt produced by neutralization of Ehydr obromic acid with Mg(OH)2? A. MgBr B. Mg2Br3 C. Mg3Br2 D. Mg2Br E. MgBr2 Answer: E 4. 26What is the chemical formula of the salt produced by neutralization of nitric acid M with Ca(OH)2? A. CaNO3 B. Ca2(NO3)3 C. Ca3(NO3)2 D. Ca2NO3 E. Ca(NO3)2 Answer: E 4. 27What is the chemical formula of the salt produced by neutralization of sodium Mhydroxide with sulfuric acid? A. NaSO3 B. Na2(SO4)3 C. Na(SO4)2 D. Na2SO4 E. Na3SO4 Answer: D 4. 8What is the chemical formula of the salt produced by neutralization of potassium M hydroxide (KOH) with sulfuric acid (H2SO4)? A. KSO3 B. K2(SO4)3 C. K2SO4 D. K(SO4)2 E. KSO4 Answer: C 4. 29The oxidation number of N in NaNO3 is: M A. +6 B. +5 C. +3 D. – 3 E. none of these Answer: B 4. 30The oxidation number of S in K2SO4 is: M A. +6 B. +4 C. +2 D. – 1 E. none of these Answer: A 4. 31The oxidation number of Mn in KMnO4 is: M A. +8 B. +7 C. +5 D. – 7 E. – 8 Answer: B 4. 32The oxidation number of Fe in K3Fe(CN)6 is: H A. +3 B. +2 C. +1 D. – 3 E. – 4 Answer: A 4. 3The oxidation number of Cr in Cr2O72 – is: H A. – 12 B. – 7 C. – 2 D. +6 E. +7 Answer: D 4. 34The oxidation number of Cl in ClO3- is: H A. – 1 B. +7 C. +5 D. +3 E. none of these Answer: C 4. 35The oxidation number of Cl in ClO4- is: H A. – 1 B. +1 C. +3 D. +5 E. none of these Answer: E 4. 36The maximum oxidation number of nitrogen is: H A. +8 B. +5 C. +3 D. +1 E. – 3 Answer: B 4. 37The highest possible oxidation number of carbon is: M A. +8 B. +6 C. +4 D. +2 E. – 4 Answer: C 4. 38Select the compound below in which sulfur has its highest possible oxidation number.H A. H2S B. SO2 C. Na2SO4 D. H2SO3 E. SCl2 Answer: C 4. 39The oxidation number of N in N2H4 is: M A. +4 B. – 4 C. +2 D. – 2 E. 0 Answer: D 4. 40Which choice below gives the oxidation numbers for all three elements in Rb2SO3 Mcorrectly, and in the order shown in the formula? A. – 2, +6, – 2 B. â €“ 1, +4, – 3 C. +2, +4, – 2 D. +1, +4, – 2 E. +1, +6, – 6 Answer: D 4. 41Which one of the following is a redox reaction? M A. H+(aq) + OH – (aq) > H2O(l) B. 2KBr(aq) + Pb(NO3)2(aq) > 2KNO3(aq) + PbBr2(s) C. CaBr2(aq) + H2SO4(aq) > CaSO4(s) + 2HBr(g) D. Al(s) + 3H2SO4(aq) > Al2(SO4)3(aq) + 3H2(g) E. CO32 – + HSO4- > HCO3- + SO42 – Answer: D 4. 42Which of the following reactions does not represent an oxidation- Mreduction reaction? A. 3Al + 6HCl > 3H2 + AlCl3 B. 2H2O > 2H2 + O2 C. 2NaCl + Pb(NO3)2 > PbCl2 + 3NaNO3 D. 2NaI + Br2 > 2NaBr + I2 Answer: C 4. 43In the following reaction the oxidizing agent is: H 5H2O2 + 2MnO4- + 6H+ > 2Mn2+ + 8H2O + 5O2 A. H2O2 B. MnO4- C. H+ D. Mn2+ E. O2 Answer: B 4. 44In the following reaction the oxidizing agent is: H 5S + 6KNO3 + 2CaCO3 > 3K2SO4 + 2CaSO4 + CO2 + 3N2 A. S B. N2 C. KNO3 D. CaSO4 E. CaCO3Answer: C 4. 45Identify the oxidizing agent in the following reaction: H 2MnO4- + 5H2SO3 > 2Mn2+ + 5SO42 – + 4H+ + 3H2O A. MnO4- B. H2SO3 C. Mn2+ D. SO42 – E. H+ Answer: A 4. 46Identify the reducing agent in the following reaction: H 5Fe2+(aq) + MnO4-(aq) + 8H+(aq) > 5Fe3+(aq) + Mn2+(aq) + 4H2O(l) A. Fe2+ B. MnO4- C. H+ D. Mn2+ E. Fe3+ Answer: A 4. 47Identify the reducing agent in the following reaction. M Cd + NiO2 + 2H2O > Cd(OH)2 + Ni(OH)2 A. Cd B. NiO2 C. H2O D. Cd(OH)2 E. Ni(OH)2 Answer: A 4. 48What element is oxidized in the following reaction? M 3Cu + 8HNO3 ? Cu(NO3)2 + 2NO + 4H2O A. Cu B. H C. N D. O E. H2O Answer: A 4. 49What element is oxidized in the following reaction? M Cd + NiO2 + 2H2O > Cd(OH)2 + Ni(OH)2 A. Cd B. Ni C. O D. H Answer: A 4. 50What element is oxidized in the following reaction? M H2SO4 + Cd(OH)2 > 2H2O + CdSO4 A. H B. S C. O D. Cd E. none of these Answer: E 4. 51What element is reduced in the following reaction? M Cu + 2H2SO4 > CuSO4 + SO2 + 2H2O A. Cu B. H C. S D. O E. H2O Answer: C 4. 52Predict the products of the following displacemen t reaction. M Fe(s) + CuSO4(aq) > A. CuS(s) + Fe2SO4(aq)B. Fe(s) + Cu(s) + SO4(aq) C. Cu(s) + FeSO4(aq) D. FeCuSO4 E. FeO(s) + CuSO3(aq) Answer: C 4. 53Complete and balance the following half-reaction. M ClO- + e- > Cl- (basic solution) The balanced half-reaction will show which of the following: A. two hydroxide ions on the right side B. one electron on the left side C. six H+ ions on the right side D. six H+ ions on the left side E. two water molecules on the left side Answer: A 4. 54Complete and balance the following redox equation. When balanced with Mwhole number coefficients, the coefficient of S is: H2S + HNO3 > S + NO (acidic solution) A. 1 B. 2 C. 3 D. E. 6 Answer: C 4. 55When balanced, what is the coefficient of Sn in the equation? M Sn + HNO3 > SnO2 + NO2 + H2O (acidic solution) A. 1 B. 2 C. 3 D. 4 E. 5 Answer: A 4. 56Complete and balance the following redox reaction. What is the coefficient of H2O M when the equation is balanced with the smallest whole number coefficient s? MnO4- + SO32 – > Mn2+ + SO42 – (acidic solution) A. 3 B. 4 C. 5 D. 8 E. none of these Answer: A 4. 57Complete and balance the following redox reaction. What is the coefficient of H2S Mwhen the equation is balanced with the set of smallest whole numbers?H2S + MnO4- > Mn2+ + SO42 – (acidic solution) A. 1 B. 2 C. 4 D. 5 E. none of these Answer: D 4. 58Complete and balance the following redox equation. What is the coefficient of H2O Mwhen the equation is balanced with the set of smallest whole numbers? MnO4- + I – > MnO2 + IO3- (basic solution) A. 1 B. 2 C. 4 D. 10 E. none of these Answer: A 4. 59Complete and balance the following redox reaction. What is the coefficient of OH- Mwhen the equation is balanced with the set of smallest whole numbers? MnO4- + I – > MnO2 + IO3- (basic solution) A. 1 B. 2 C. 4 D. 10 E. none of theseAnswer: B 4. 60Complete and balance the following redox equation with the smallest set of whole- Mnumber coefficients. Now sum the coefficients of all species in the balanced equation. Remember the coefficients equal to one. The sum of the coefficients is: BrO3- (aq) + Sb3+(aq) > Br – (aq) + Sb5+(aq) (acidic solution) A. 4 B. 12 C. 13 D. 17 E. none of these Answer: D 4. 61Complete and balance the following redox reaction with the smallest set of whole-number coefficients. M When correctly balanced the sum of all the coefficients in the equation will be: (Recall, the absence of a coefficient is understood to be a 1)PbO2(s) + Cl- > Pb2+ + Cl2(g) (acidic solution) A. 2 B. 4 C. 5 D. 9 E. 11 Answer: E 4. 62Complete and balance the following redox equation with the smallest set of whole Mnumber coefficients possible. What is the sum of the coefficients? (Remember the coefficients equal to one. ) HI + HNO3 > I2 + NO (acidic solution) A. 5 B. 7 C. 14 D. 17 E. none of these Answer: D 4. 63Complete and balance the following redox equation with the smallest set of whole-number coefficients Mpossible. What is t he sum of the coefficients? MnO4- + Br – > Mn2+ + Br2 (acidic solution) A. 6 B. 17 C. 1 D. 29 E. 43 Answer: E Complete and balance the following redox equation with the smallest set of whole-number coefficients Mpossible. What is the sum of the coefficients? Bi(OH)3 + SnO2 2 – > Bi + SnO32 – (basic solution) A. 32 B. 25 C. 16 D. 13 E. none of these Answer: D 4. 65Complete and balance the following redox equation with the smallest set of whole-number coefficients Mpossible. What is the sum of the coefficients? Br2 > BrO3- + Br- (basic solution) A. 9 B. 12 C. 18 D. 21 E. none of these Answer: C 4. 66Which of the following is a displacement reaction? E A. NaN3(s) > 2Na(s) + 3N2(g) B. Fe2O3(s) + 2Al(s) > 2Fe(s) + Al2O3(s) C. 3NO2(g) + H2O(l) > 2HNO3(aq) + NO(g) D. 2P(s) + 3Cl2(g) > 2PCl3(g) E. 2ZnS(s) + 3O2(g) > 2ZnO(s) + 2SO2(g) Answer: B 4. 67Which of the following is a halogen displacement reaction? E A. 2KBr(aq) + Cl2(g) > 2KCl(aq) + Br2(l) B. 2Na(s) + 2H2O(l) > 2NaOH(aq) + H2(g) C. CaBr2(aq) + H2SO4(aq) > CaSO4(s) + 2HBr(g) D. 2KNO3(s) > 2KNO2(s) + O2(g) E. 2LiOH(aq) + H2SO4(aq) > Li2SO4(aq) + 2H2O(l) Answer: A 4. 68Which of the following is a precipitation reaction? M A. 2H2(g) + O2(g) > 2H2O(l) B. CaBr2(aq) + H2SO4(aq) > CaSO4(s) + 2HBr(g) C. KNO3(s) > 2KNO2(s) + O2(g) D. 2KBr(aq) + Cl2(g) > 2KCl(aq) + Br2(l) E. 2Al(s) + 3H2SO4(aq) > Al2(SO4)3(aq) + 3H2(g) Answer: B 4. 69Which of the following is an acid-base neutralization reaction? E A. 2Al(s) + 3H2SO4(aq) > Al2(SO4)3(aq) + 3H2(g) B. SO2(g) + H2O(l) > H2SO3(g) C. LiOH(aq) + HNO3(aq) > LiNO3(aq) + H2O(l) D. 2KBr(aq) + Cl2(g) > 2KCl(aq) + Br2(l) E. CaBr2(aq) + H2SO4(aq) > CaSO4(s) + 2HBr(g) Answer: C 4. 7025. 0 mL of a 0. 175 M solution of KOH is diluted with pure water to a final Mvolume of 750. 0 mL. What is the final molarity of the KOH solution? 0. 00583 M 0. 0163 M 0. 0333 M 0. 229 MAnswer: A 4. 71Consider the solution reaction AlCl3 + 3AgNO3 > 3AgCl + Al(NO3)3. M What volume of 0. 100 M AlCl3 will exactly react with 55. 0 mL of 0. 162 M AgNO3? 89. 1 mL 9. 90 mL 46. 2 mL 29. 7 mL Answer: D 4. 72What is the molarity of a solution in which 26. 0 grams of BaCl2 M(molar mass = 208. 2 g/mol) are dissolved in enough water to make 450. 0 mL of solution? 0. 278 M 0. 617 M 1. 00 M 3. 41 M Answer: A 4. 73If 40. 0 mL of H2SO4 solution reacts with 0. 212 g of Na2CO3, what is the Mmolarity of the H2SO4 solution? Na2CO3 + H2SO4 > Na2SO4 + CO2 + H2O 0. 50 M 0. 10 M 0. 20 M 0. 40 M 0. 050 M Answer: E 4. 4What volume of 0. 122 M HCl would react with 26. 2 mL of 0. 176 M NaOH? M 37. 8 mL 18. 2 mL 5. 56 mL 26. 3 mL 75. 6 mL Answer: A 4. 75 What is the oxidation number of N in NaNO3? M +1 +2 +3 +4 +5 Answer: E 4. 76In the following reaction, which species is being reduced? MFeBr3 + 3Cl2 > 2FeCl3 + 3Br2 A. the Cl in Cl2 B. the Fe in FeBr3 C. the Br in FeBr3 D. This is not a redox reaction. Answer: A 4. 77 Which is the oxidation number of arsenic in K3AsO4? M +2 +3 +4 +5 +6 Answer : D 4. 78In which of the compounds below is nitrogen in the +1 oxidation state? M A. N2O4 B. HNO3 C. N2 D. N2O E. none of these Answer: D . 79 Which reaction below is NOT an oxidation-reduction reaction? M CaCl2(aq) + Na2CO3(aq) > CaCO3(s) + 2 NaCl(aq) 2 Na(s) + 2 H2O(l) > 2 NaOH(aq) + H2(g) 2 H2(g) + O2(g) > 2 H2O(g) Zn(s) + Cu(NO3)2(aq) > Zn(NO3)2(aq) + Cu(s) Answer: A 4. 80 Identify the oxidizing agent in the following reaction: 2 Na(s) + H2(g) > 2 NaH(s) M Na(s) NaH(s) H2(g) Answer: C 4. 81Which of the following is the correct NET IONIC equation for the M neutralization of acetic acid (HAc) with Ca(OH)2? (Ac = acetate ion) 2 HAc + Ca(OH)2 > CaAc2 + 2 H2O H+ + OH – > H2O HAc + OH – > Ac – + H2O 2 H+ + Ca(OH)2 > Ca2+ + 2 H2OAnswer: C 4. 82 Which of the following is INCORRECTLY classified? (Ac = acetate ion) E HAc / weak electrolyte HCl / strong electrolyte NaCl / strong electrolyte NaOH / weak electrolyte H2O / nonelectrolyte Answer: D 4. 83Which of the follow ing compounds are INCORRECTLY classified with respect to its solubility in water? M NaBr / soluble KCrO4 / insoluble MgCl2 / soluble AgCl / insoluble PbS / insoluble Answer: B 4. 84 Which of these is a weak acid? E HNO3 H2SO4 HBr HI H2S Answer: E 4. 85Solutions of BaCl2(aq), Na2SO4(aq) and KNO3(aq) are mixed together. MWhat compound is likely to precipitate from the solution?NaNO3 Ba(NO3)2 BaSO4 KCl K2SO4 Answer: C SHORT ANSWER QUESTIONS 4. 86Define solution, solute and solvent. E Answer: A solution is a homogeneous mixture of two or more substances. The substance present in a smaller amount is called the solute, while the substance present in the larger amount is called the solvent. 4. 87Identify each of the following compounds as an electrolyte or nonelectrolyte. E a. NaOH___________________ b. H2SO4___________________ c. methanol___________________ d. C12H22O11 (sucrose)___________________ e. MgCl2___________________ Answer: a. electrolyte b. electrolyte c. onelectrolyte d. nonel ectrolyte e. electrolyte 4. 88Identify each of the following compounds as a strong electrolyte, weak electrolyte, Eor non electrolyte. a. CH3OH (methanol)____________________ b. CH3COOH____________________ c. KNO3____________________ d. NH3____________________ e. NH4Cl____________________ Answer: a. nonelectrolyte b. weak electrolyte c. strong electrolyte d. weak electrolyte e. strong electrolyte 4. 89Describe three situations or conditions in which a reaction will proceed to Mcompletion. Answer: a. reactions in which a precipitate is formed b. reactions in which H2O is formed c. eactions in which a gas is formed 4. 90Define and illustrate with an example the difference between an electrolyte and Mnonelectrolyte. Answer: (answers will vary) An electrolyte is a substance that will dissolve in water and break up into ions so the solution can conduct electricity. An example is Sodium hydrogen carbonate. A nonelectrolyte is a substance that does not break up into ions when dissolved in water and the resulting solution does not conduct electricity. An example is sugar. 4. 91Define precipitate and illustrate with an example. E Answer: A precipitate is an insoluble solid that separates from a solution.CoCl2 (aq) + Na2CO3(aq) > CoCO3 (s) + 2NaCl (aq) CoCO3 would be the precipitate in this reaction. 4. 92What are three characteristics of a base? E Answer: a. Bases taste bitter. b. Bases feel slippery. c. Bases change change red litmus paper to blue. 4. 93What are three characteristics of an acid? E Answer: a. Acids taste sour. b. Acids change blue litmus paper to red. c. Acids react with certain metals to produce hydrogen gas . 4. 94What kind of bonding is found in all salts? E Answer: ionic 4. 95Give an example of a monoprotic acid, diprotic acid, and triprotic acid. E Answer: (answers will vary) HNO3 , H2CO3 , H3PO4 . 96Write the net ionic equation for the following reaction. Aqueous iron (III) sulfate is E added to aqueous sodium sulfide to produce iron (III) sulfid e solid and aqueous sodium sulfate. Answer: 2Fe3+ (aq) + 3S2 – (aq) > Fe2S3 (s) 4. 97What is the oxidation number for each of the elements in the following compound? M Cs2Cr2O7 Answer: Cs1+, Cr6+, O2 – 4. 98Identify the element being oxidized, the element being reduced, the oxidizing Magent, and the reducing agent in the following reactions. 4Al + 3O2 > 2Al2O3 Answer: Al is oxidized;O2 is reduced; Al is the reducing agent; O2 is the oxidizing agent . 99Identify the element being oxidized, the element being reduced, the oxidizing Magent, and the reducing agent in the following reactions. 2KBr + F2 ? > Br2 + 2KF Answer: Br – is oxidized, F2 is reduced, KBr is the reducing agent, F2 is the oxidizing agent 4. 100What is the oxidation number for each of the elements in the following compound? M BaNaPO4 Answer: Ba, +2; Na, +1; P, +5; O, -2 4. 101What is the oxidation number for each of the elements in the following compound? M K2TaF7 Answer: K, +1; Ta, +5; F, -1 4. 10 2Thorium metal is prepared by reacting thorium oxide with calcium. M ThO2 + 2Ca > Th + 2CaOWhat substance is reduced? What is the reducing agent? What substance is oxidized? What is the oxidizing agent? Answer: Th4+ is reduced, Ca is the reducing agent, Ca is oxidized, ThO4 is the oxidizing agent 4. 103Batteries in our cars generate electricity by the following chemical reaction. M Pb + PbO2 + 2H2SO4 > 2PbSO4 + 2H2O What substance is reduced? What is the reducing agent? What substance is oxidized? What is the oxidizing agent? Answer: Pb4+ is reduced, Pb is the reducing agent, Pb is oxidized, PbO2 is the oxidizing agent 4. 104Describe the procedure used to make 3. 0 liters of a 2. M KCl solution, starting Hwith solid KCl. Answer: a. Determine the molar mass of KCl, which is 74. 55 g/mol. b. Weigh out 447. 3 g of KCl and dissolve to form exactly 3 liters of solution. 4. 105What is the molarity of a solution that contains 5. 0 moles of solute in 2. 00 liters of Esolution? Answer: 2. 5 M 4. 106The solubility of Ba(NO3)2 is 130. 5 g per liter at 0 °C. How many moles of Hdissolved salt are present in 4. 0 L of a saturated solution of a Ba(NO3)2 containing 130. 5 g/L at 0 °C? Answer: 2. 0 mol 4. 107What is the molar concentration of ions in a solution prepared by mixing M100 mL of 2. 0M KCl with 50 mL of a 1. M CaCl2 solution? Answer: 4. 2 M 4. 108What volume of concentrated nitric acid (15. 0 M) is required to make 100 mL of a M3. 0 M nitric acid solution? Answer: 20 mL 4. 109During a titration the following data were collected. A 10 mL portion of an Munknown solution was titrated with 1. 0 M NaOH. It required 40 mL of the base to neutralize the sample. (a) What is the molarity of the acid? (b) How many moles of acid are present in 2. 0 liters of this unknown solution? Answer: a. 4 M b. 8 mol 4. 110If 145 g of potassium nitrate were added to water to make 1500 mL of solution, Mwhat would be the molarity of the resulting solution?Answer: . 956 M 4. 111During a ti tration the following data were collected. A 50 mL portion of an HCl Msolution was titrated with 0. 50 M NaOH. It required 200 mL of the base to neutralize the sample. How many grams of acid are present in 500 mL of this acid solution? Answer: The acid is 2 M. 36. 5 g of HCl 4. 112Identify the Bronsted/Lowry acid in the following reaction. M NH3 + H2O > NH4+ + OH- Answer: H2O 4. 113Identify each of the following as either good or poor conductors of electricity. M a. CaSO4 b. Pb(C2H3O2)2 c. glacial acetic acid d. gasoline (C8H18)Answer: a. good b. good c. poor d. poor 4. 114What is the substance acting as a Bronsted-Lowry acid in the following reaction. M HSO4- + NH4+ > H2SO4 + NH3 Answer: NH4+ 4. 115The water solution found in cells and in blood makes up approximately 80% of the mass of the human body. This solution has a concentration of 0. 21 M NaCl and has a density of 1 g/mL. How many pounds of salt are present in an 180 lb adult? Answer: 1. 77 lbs (802. 5 g) TRUE-FALSE QUESTION S 4. 116We balance chemical equations because they obey the law of definite proportions. M Answer: F 4. 17From the following equation, we can deduce that six hundred P4O10 molecules M would react with one hundred H2O molecules. P4O10(s) + 6H2O(l) > 4H3PO4(aq) Answer: F 4. 118The following equation is balanced. M Ca(NO3)2(aq) + H2SO4(aq) > CaSO4(s) + 2HNO3(g) Answer: T 4. 119Sugar dissolves in water, therefore it is a strong electrolyte. E Answer: F 4. 120Silver chloride (AgCl) has an extremely low solubility in water; therefore, it is a Eweak electrolyte. Answer: F 4. 121Most compounds containing chlorides, bromides, and iodides are soluble except Ethose of Ag+, Hg, and Pb2+.Answer: T 4. 122The following reaction is an acid-base neutralization reaction. E H2SO4(aq) + CaBr2(aq) > CaSO4(s) + 2HBr(g) Answer: F 4. 123The oxidation number of N in NO is +7. E Answer: F 4. 124Hydrogen is oxidized in the following reaction. M H2 + Cl2 > 2HCl Answer: T 4. 125The following equation is an exam ple of a net ionic equation. M Na+ + Br- + Ag+ + NO3- > AgBr(s) + Na+ + NO3- Answer: F 4. 126The oxidation number of iodine increases by 6 in the following reaction. M 2MnO4- + I – + H2O > 2MnO2 + IO3- + 2OH- Answer: T Review Chemistry Chapter 4 CHAPTER 4 REACTIONS IN AQUEOUS SOLUTION MULTIPLE CHOICE QUESTIONS 4. 1Which of the following compounds is a strong electrolyte? E A. H2O B. O2 C. H2SO4 D. C6H12O6 (glucose) E. CH3COOH (acetic acid) Answer: C 4. 2Which of the following compounds is a strong electrolyte? E A. H2O B. N2 C. KOH D. C2H6O (ethanol) E. CH3COOH (acetic acid) Answer: C 4. 3Which of the following compounds is a weak electrolyte? E A. HCl B. CH3COOH (acetic acid) C. C6H12O6 (glucose) D. O2 E. NaCl Answer: B 4. 4Which of the following compounds is a weak electrolyte? E A. HCl B. NH3 C. C6H12O6 (glucose) D. N2 E. KClAnswer: B 4. 5Which of the following compounds is a nonelectrolyte? E A. NaF B. HNO3 C. CH3COOH (acetic acid) D. NaOH E. C6H12O6 (glucose) Answer: E 4. 6Which of the following compounds is a nonelectrolyte? E A. NaOH B. HNO3 C. CH3COOH (acetic acid) D. KF E. C2H6O (ethanol) Answer: E 4. 7Identify the major ionic species present in an aqueous solution of NaNO3. M A. Na2+, NO3 – B. Na+, N3 â€⠀œ , O3 C. Na+, N3 -, O32 – D. Na+, N+, O2 – E. Na+, NO3 – Answer: E 4. 8Identify the major ionic species present in an aqueous solution of Ca(OH)2. E A. Ca2+, H+, O2 – B. Ca2+, OH2- C. Ca+, H-, O2 – D.Ca2+, O2H22 – E. Ca2+, OH – Answer: E 4. 9The distinguishing characteristic of all electrolyte solutions is that they: E A. contain molecules B. conduct electricity C. react with other solutions D. always contain acids E. conduct heat Answer: B 4. 10According to the solubility rules, which one of the following compounds is insoluble Ein water? A. NaCl B. MgBr2 C. FeCl2 D. AgBr E. ZnCl2 Answer: D 4. 11According to the solubility rules, which one of the following compounds is insoluble Ein water? A. Na2SO4 B. BaSO4 C. CuSO4 D. MgSO4 E. Rb2SO4 Answer: B 4. 2According to the solubility rules, which one of the following compounds is insoluble Ein water? A. CaCO3 B. (NH4)2CO3 C. Na2CO3 D. K2CO3 E. KNO3 Answer: A 4. 13According to the solubili ty rules, which one of the following is soluble in water? E A. Hg2Cl2 B. Na2S C. Ag2CO3 D. Ag2S E. BaSO4 Answer: B 4. 14According to the solubility rules, which one of the following is soluble in water? E A. AgBr B. AgCl C. Ag2CO3 D. AgNO3 E. Ag2S Answer: D 4. 15According to the solubility rules, which one of the following is soluble in water? E A. (NH4)3PO4 B. Ca3(PO4)2 C. AlPO4 D.Ag3PO4 E. Mg3(PO4)2 Answer: A 4. 16According to the solubility rules, which one of the following is soluble in water? E A. CaSO4 B. BaSO4 C. PbSO4 D. K2SO4 Answer: D 4. 17In accordance with the solubility rules, which of the following will occur when Msolutions containing about 0. 1 g of Pb(NO3)2(aq) and KI(aq) /100 mL are mixed? A. KNO3 will precipitate; Pb2+ and I- will be spectator ions. B. No precipitate will form. C. Pb(NO3)2 will precipitate; K+ and I- will be spectator ions. D. PbI2 will precipitate; K+ and NO3- will be spectator ions. E. Pb2+ and I- will be spectator ions, and PbI2 will precipitat e. Read this Practice Test Chem 105Answer: D 4. 18In accordance with the solubility rules, which of the following will occur when Msolutions of CuSO4(aq) and BaCl2(aq) are mixed? A. CuCl2 will precipitate; Ba2+ and SO42 – will be spectator ions. B. CuSO4 will precipitate; Ba2+ and Cl – will be spectator ions. C. BaSO4 will precipitate; Cu2+ and Cl- will be spectator ions. D. BaCl2 will precipitate; Cu2+ and SO42 – will be spectator ions. E. No precipitate will form. Answer: C 4. 19In accordance with the solubility rules, which of the following will occur when Msolutions of ZnSO4(aq) and MgCl2(aq) are mixed? A.ZnCl2 will precipitate; Mg2+ and SO42 – will be spectator ions. B. ZnSO4 will precipitate; Mg2+ and Cl- will be spectator ions. C. MgSO4 will precipitate; Zn2+ and Cl- will be spectator ions. D. MgCl2 will precipitate; Zn2+ and SO42 – will be spectator ions. E. No precipitate will form. Answer: E 4. 20Which of the following is the correct net ioni c equation for the reaction that occurs M when solutions of Pb(NO3)2 and NH4Cl are mixed? A. Pb(NO3)2(aq) + 2NH4Cl(aq) > NH4NO3(aq) + PbCl2(s) B. Pb2+(aq) + 2Cl-(aq) > PbCl2(s) C. Pb2+(aq) + 2NO3-(aq) + 2NH4+(aq) + 2Cl-(aq) > 2NH4+(aq) + 2NO3-(aq) + PbCl2(s) D.NH4+(aq) + NO3-(aq) > 2NH4NO3 Answer: B 4. 21The common constituent in all acid solutions is: M A. H2 B. H+ C. OH- D. H2SO4 E. Cl- Answer: B 4. 22Identify the ions present in an aqueous solution of LiOH. E A. Li2+, O- , H- B. Li+, OH- C. LiO-, H+ D. Li+, O2 – , H+ E. Li – , OH+ Answer: B 4. 23Identify the major ions present in an aqueous solution of HNO3. E A. HN+, O2 – B. OH- , NO3- C. OH- , NO+ D. H+, N3-, O2 – E. H+, NO3- Answer: E 4. 24What choice gives the correct formula of the salt formed in the neutralization Ereaction of hydrochloric acid and calcium hydroxide? A. CaO B.CaCl2 C. CaH2 D. CaCl E. CaClH Answer: B 4. 25What is the chemical formula of the salt produced by neutralization of Ehydr obromic acid with Mg(OH)2? A. MgBr B. Mg2Br3 C. Mg3Br2 D. Mg2Br E. MgBr2 Answer: E 4. 26What is the chemical formula of the salt produced by neutralization of nitric acid M with Ca(OH)2? A. CaNO3 B. Ca2(NO3)3 C. Ca3(NO3)2 D. Ca2NO3 E. Ca(NO3)2 Answer: E 4. 27What is the chemical formula of the salt produced by neutralization of sodium Mhydroxide with sulfuric acid? A. NaSO3 B. Na2(SO4)3 C. Na(SO4)2 D. Na2SO4 E. Na3SO4 Answer: D 4. 8What is the chemical formula of the salt produced by neutralization of potassium M hydroxide (KOH) with sulfuric acid (H2SO4)? A. KSO3 B. K2(SO4)3 C. K2SO4 D. K(SO4)2 E. KSO4 Answer: C 4. 29The oxidation number of N in NaNO3 is: M A. +6 B. +5 C. +3 D. – 3 E. none of these Answer: B 4. 30The oxidation number of S in K2SO4 is: M A. +6 B. +4 C. +2 D. – 1 E. none of these Answer: A 4. 31The oxidation number of Mn in KMnO4 is: M A. +8 B. +7 C. +5 D. – 7 E. – 8 Answer: B 4. 32The oxidation number of Fe in K3Fe(CN)6 is: H A. +3 B. +2 C. +1 D. – 3 E. – 4 Answer: A 4. 3The oxidation number of Cr in Cr2O72 – is: H A. – 12 B. – 7 C. – 2 D. +6 E. +7 Answer: D 4. 34The oxidation number of Cl in ClO3- is: H A. – 1 B. +7 C. +5 D. +3 E. none of these Answer: C 4. 35The oxidation number of Cl in ClO4- is: H A. – 1 B. +1 C. +3 D. +5 E. none of these Answer: E 4. 36The maximum oxidation number of nitrogen is: H A. +8 B. +5 C. +3 D. +1 E. – 3 Answer: B 4. 37The highest possible oxidation number of carbon is: M A. +8 B. +6 C. +4 D. +2 E. – 4 Answer: C 4. 38Select the compound below in which sulfur has its highest possible oxidation number.H A. H2S B. SO2 C. Na2SO4 D. H2SO3 E. SCl2 Answer: C 4. 39The oxidation number of N in N2H4 is: M A. +4 B. – 4 C. +2 D. – 2 E. 0 Answer: D 4. 40Which choice below gives the oxidation numbers for all three elements in Rb2SO3 Mcorrectly, and in the order shown in the formula? A. – 2, +6, – 2 B. â €“ 1, +4, – 3 C. +2, +4, – 2 D. +1, +4, – 2 E. +1, +6, – 6 Answer: D 4. 41Which one of the following is a redox reaction? M A. H+(aq) + OH – (aq) > H2O(l) B. 2KBr(aq) + Pb(NO3)2(aq) > 2KNO3(aq) + PbBr2(s) C. CaBr2(aq) + H2SO4(aq) > CaSO4(s) + 2HBr(g) D. Al(s) + 3H2SO4(aq) > Al2(SO4)3(aq) + 3H2(g) E. CO32 – + HSO4- > HCO3- + SO42 – Answer: D 4. 42Which of the following reactions does not represent an oxidation- Mreduction reaction? A. 3Al + 6HCl > 3H2 + AlCl3 B. 2H2O > 2H2 + O2 C. 2NaCl + Pb(NO3)2 > PbCl2 + 3NaNO3 D. 2NaI + Br2 > 2NaBr + I2 Answer: C 4. 43In the following reaction the oxidizing agent is: H 5H2O2 + 2MnO4- + 6H+ > 2Mn2+ + 8H2O + 5O2 A. H2O2 B. MnO4- C. H+ D. Mn2+ E. O2 Answer: B 4. 44In the following reaction the oxidizing agent is: H 5S + 6KNO3 + 2CaCO3 > 3K2SO4 + 2CaSO4 + CO2 + 3N2 A. S B. N2 C. KNO3 D. CaSO4 E. CaCO3Answer: C 4. 45Identify the oxidizing agent in the following reaction: H 2MnO4- + 5H2SO3 > 2Mn2+ + 5SO42 – + 4H+ + 3H2O A. MnO4- B. H2SO3 C. Mn2+ D. SO42 – E. H+ Answer: A 4. 46Identify the reducing agent in the following reaction: H 5Fe2+(aq) + MnO4-(aq) + 8H+(aq) > 5Fe3+(aq) + Mn2+(aq) + 4H2O(l) A. Fe2+ B. MnO4- C. H+ D. Mn2+ E. Fe3+ Answer: A 4. 47Identify the reducing agent in the following reaction. M Cd + NiO2 + 2H2O > Cd(OH)2 + Ni(OH)2 A. Cd B. NiO2 C. H2O D. Cd(OH)2 E. Ni(OH)2 Answer: A 4. 48What element is oxidized in the following reaction? M 3Cu + 8HNO3 ? Cu(NO3)2 + 2NO + 4H2O A. Cu B. H C. N D. O E. H2O Answer: A 4. 49What element is oxidized in the following reaction? M Cd + NiO2 + 2H2O > Cd(OH)2 + Ni(OH)2 A. Cd B. Ni C. O D. H Answer: A 4. 50What element is oxidized in the following reaction? M H2SO4 + Cd(OH)2 > 2H2O + CdSO4 A. H B. S C. O D. Cd E. none of these Answer: E 4. 51What element is reduced in the following reaction? M Cu + 2H2SO4 > CuSO4 + SO2 + 2H2O A. Cu B. H C. S D. O E. H2O Answer: C 4. 52Predict the products of the following displacemen t reaction. M Fe(s) + CuSO4(aq) > A. CuS(s) + Fe2SO4(aq)B. Fe(s) + Cu(s) + SO4(aq) C. Cu(s) + FeSO4(aq) D. FeCuSO4 E. FeO(s) + CuSO3(aq) Answer: C 4. 53Complete and balance the following half-reaction. M ClO- + e- > Cl- (basic solution) The balanced half-reaction will show which of the following: A. two hydroxide ions on the right side B. one electron on the left side C. six H+ ions on the right side D. six H+ ions on the left side E. two water molecules on the left side Answer: A 4. 54Complete and balance the following redox equation. When balanced with Mwhole number coefficients, the coefficient of S is: H2S + HNO3 > S + NO (acidic solution) A. 1 B. 2 C. 3 D. E. 6 Answer: C 4. 55When balanced, what is the coefficient of Sn in the equation? M Sn + HNO3 > SnO2 + NO2 + H2O (acidic solution) A. 1 B. 2 C. 3 D. 4 E. 5 Answer: A 4. 56Complete and balance the following redox reaction. What is the coefficient of H2O M when the equation is balanced with the smallest whole number coefficient s? MnO4- + SO32 – > Mn2+ + SO42 – (acidic solution) A. 3 B. 4 C. 5 D. 8 E. none of these Answer: A 4. 57Complete and balance the following redox reaction. What is the coefficient of H2S Mwhen the equation is balanced with the set of smallest whole numbers?H2S + MnO4- > Mn2+ + SO42 – (acidic solution) A. 1 B. 2 C. 4 D. 5 E. none of these Answer: D 4. 58Complete and balance the following redox equation. What is the coefficient of H2O Mwhen the equation is balanced with the set of smallest whole numbers? MnO4- + I – > MnO2 + IO3- (basic solution) A. 1 B. 2 C. 4 D. 10 E. none of these Answer: A 4. 59Complete and balance the following redox reaction. What is the coefficient of OH- Mwhen the equation is balanced with the set of smallest whole numbers? MnO4- + I – > MnO2 + IO3- (basic solution) A. 1 B. 2 C. 4 D. 10 E. none of theseAnswer: B 4. 60Complete and balance the following redox equation with the smallest set of whole- Mnumber coefficients. Now sum the coefficients of all species in the balanced equation. Remember the coefficients equal to one. The sum of the coefficients is: BrO3- (aq) + Sb3+(aq) > Br – (aq) + Sb5+(aq) (acidic solution) A. 4 B. 12 C. 13 D. 17 E. none of these Answer: D 4. 61Complete and balance the following redox reaction with the smallest set of whole-number coefficients. M When correctly balanced the sum of all the coefficients in the equation will be: (Recall, the absence of a coefficient is understood to be a 1)PbO2(s) + Cl- > Pb2+ + Cl2(g) (acidic solution) A. 2 B. 4 C. 5 D. 9 E. 11 Answer: E 4. 62Complete and balance the following redox equation with the smallest set of whole Mnumber coefficients possible. What is the sum of the coefficients? (Remember the coefficients equal to one. ) HI + HNO3 > I2 + NO (acidic solution) A. 5 B. 7 C. 14 D. 17 E. none of these Answer: D 4. 63Complete and balance the following redox equation with the smallest set of whole-number coefficients Mpossible. What is t he sum of the coefficients? MnO4- + Br – > Mn2+ + Br2 (acidic solution) A. 6 B. 17 C. 1 D. 29 E. 43 Answer: E Complete and balance the following redox equation with the smallest set of whole-number coefficients Mpossible. What is the sum of the coefficients? Bi(OH)3 + SnO2 2 – > Bi + SnO32 – (basic solution) A. 32 B. 25 C. 16 D. 13 E. none of these Answer: D 4. 65Complete and balance the following redox equation with the smallest set of whole-number coefficients Mpossible. What is the sum of the coefficients? Br2 > BrO3- + Br- (basic solution) A. 9 B. 12 C. 18 D. 21 E. none of these Answer: C 4. 66Which of the following is a displacement reaction? E A. NaN3(s) > 2Na(s) + 3N2(g) B. Fe2O3(s) + 2Al(s) > 2Fe(s) + Al2O3(s) C. 3NO2(g) + H2O(l) > 2HNO3(aq) + NO(g) D. 2P(s) + 3Cl2(g) > 2PCl3(g) E. 2ZnS(s) + 3O2(g) > 2ZnO(s) + 2SO2(g) Answer: B 4. 67Which of the following is a halogen displacement reaction? E A. 2KBr(aq) + Cl2(g) > 2KCl(aq) + Br2(l) B. 2Na(s) + 2H2O(l) > 2NaOH(aq) + H2(g) C. CaBr2(aq) + H2SO4(aq) > CaSO4(s) + 2HBr(g) D. 2KNO3(s) > 2KNO2(s) + O2(g) E. 2LiOH(aq) + H2SO4(aq) > Li2SO4(aq) + 2H2O(l) Answer: A 4. 68Which of the following is a precipitation reaction? M A. 2H2(g) + O2(g) > 2H2O(l) B. CaBr2(aq) + H2SO4(aq) > CaSO4(s) + 2HBr(g) C. KNO3(s) > 2KNO2(s) + O2(g) D. 2KBr(aq) + Cl2(g) > 2KCl(aq) + Br2(l) E. 2Al(s) + 3H2SO4(aq) > Al2(SO4)3(aq) + 3H2(g) Answer: B 4. 69Which of the following is an acid-base neutralization reaction? E A. 2Al(s) + 3H2SO4(aq) > Al2(SO4)3(aq) + 3H2(g) B. SO2(g) + H2O(l) > H2SO3(g) C. LiOH(aq) + HNO3(aq) > LiNO3(aq) + H2O(l) D. 2KBr(aq) + Cl2(g) > 2KCl(aq) + Br2(l) E. CaBr2(aq) + H2SO4(aq) > CaSO4(s) + 2HBr(g) Answer: C 4. 7025. 0 mL of a 0. 175 M solution of KOH is diluted with pure water to a final Mvolume of 750. 0 mL. What is the final molarity of the KOH solution? 0. 00583 M 0. 0163 M 0. 0333 M 0. 229 MAnswer: A 4. 71Consider the solution reaction AlCl3 + 3AgNO3 > 3AgCl + Al(NO3)3. M What volume of 0. 100 M AlCl3 will exactly react with 55. 0 mL of 0. 162 M AgNO3? 89. 1 mL 9. 90 mL 46. 2 mL 29. 7 mL Answer: D 4. 72What is the molarity of a solution in which 26. 0 grams of BaCl2 M(molar mass = 208. 2 g/mol) are dissolved in enough water to make 450. 0 mL of solution? 0. 278 M 0. 617 M 1. 00 M 3. 41 M Answer: A 4. 73If 40. 0 mL of H2SO4 solution reacts with 0. 212 g of Na2CO3, what is the Mmolarity of the H2SO4 solution? Na2CO3 + H2SO4 > Na2SO4 + CO2 + H2O 0. 50 M 0. 10 M 0. 20 M 0. 40 M 0. 050 M Answer: E 4. 4What volume of 0. 122 M HCl would react with 26. 2 mL of 0. 176 M NaOH? M 37. 8 mL 18. 2 mL 5. 56 mL 26. 3 mL 75. 6 mL Answer: A 4. 75 What is the oxidation number of N in NaNO3? M +1 +2 +3 +4 +5 Answer: E 4. 76In the following reaction, which species is being reduced? MFeBr3 + 3Cl2 > 2FeCl3 + 3Br2 A. the Cl in Cl2 B. the Fe in FeBr3 C. the Br in FeBr3 D. This is not a redox reaction. Answer: A 4. 77 Which is the oxidation number of arsenic in K3AsO4? M +2 +3 +4 +5 +6 Answer : D 4. 78In which of the compounds below is nitrogen in the +1 oxidation state? M A. N2O4 B. HNO3 C. N2 D. N2O E. none of these Answer: D . 79 Which reaction below is NOT an oxidation-reduction reaction? M CaCl2(aq) + Na2CO3(aq) > CaCO3(s) + 2 NaCl(aq) 2 Na(s) + 2 H2O(l) > 2 NaOH(aq) + H2(g) 2 H2(g) + O2(g) > 2 H2O(g) Zn(s) + Cu(NO3)2(aq) > Zn(NO3)2(aq) + Cu(s) Answer: A 4. 80 Identify the oxidizing agent in the following reaction: 2 Na(s) + H2(g) > 2 NaH(s) M Na(s) NaH(s) H2(g) Answer: C 4. 81Which of the following is the correct NET IONIC equation for the M neutralization of acetic acid (HAc) with Ca(OH)2? (Ac = acetate ion) 2 HAc + Ca(OH)2 > CaAc2 + 2 H2O H+ + OH – > H2O HAc + OH – > Ac – + H2O 2 H+ + Ca(OH)2 > Ca2+ + 2 H2OAnswer: C 4. 82 Which of the following is INCORRECTLY classified? (Ac = acetate ion) E HAc / weak electrolyte HCl / strong electrolyte NaCl / strong electrolyte NaOH / weak electrolyte H2O / nonelectrolyte Answer: D 4. 83Which of the follow ing compounds are INCORRECTLY classified with respect to its solubility in water? M NaBr / soluble KCrO4 / insoluble MgCl2 / soluble AgCl / insoluble PbS / insoluble Answer: B 4. 84 Which of these is a weak acid? E HNO3 H2SO4 HBr HI H2S Answer: E 4. 85Solutions of BaCl2(aq), Na2SO4(aq) and KNO3(aq) are mixed together. MWhat compound is likely to precipitate from the solution?NaNO3 Ba(NO3)2 BaSO4 KCl K2SO4 Answer: C SHORT ANSWER QUESTIONS 4. 86Define solution, solute and solvent. E Answer: A solution is a homogeneous mixture of two or more substances. The substance present in a smaller amount is called the solute, while the substance present in the larger amount is called the solvent. 4. 87Identify each of the following compounds as an electrolyte or nonelectrolyte. E a. NaOH___________________ b. H2SO4___________________ c. methanol___________________ d. C12H22O11 (sucrose)___________________ e. MgCl2___________________ Answer: a. electrolyte b. electrolyte c. onelectrolyte d. nonel ectrolyte e. electrolyte 4. 88Identify each of the following compounds as a strong electrolyte, weak electrolyte, Eor non electrolyte. a. CH3OH (methanol)____________________ b. CH3COOH____________________ c. KNO3____________________ d. NH3____________________ e. NH4Cl____________________ Answer: a. nonelectrolyte b. weak electrolyte c. strong electrolyte d. weak electrolyte e. strong electrolyte 4. 89Describe three situations or conditions in which a reaction will proceed to Mcompletion. Answer: a. reactions in which a precipitate is formed b. reactions in which H2O is formed c. eactions in which a gas is formed 4. 90Define and illustrate with an example the difference between an electrolyte and Mnonelectrolyte. Answer: (answers will vary) An electrolyte is a substance that will dissolve in water and break up into ions so the solution can conduct electricity. An example is Sodium hydrogen carbonate. A nonelectrolyte is a substance that does not break up into ions when dissolved in water and the resulting solution does not conduct electricity. An example is sugar. 4. 91Define precipitate and illustrate with an example. E Answer: A precipitate is an insoluble solid that separates from a solution.CoCl2 (aq) + Na2CO3(aq) > CoCO3 (s) + 2NaCl (aq) CoCO3 would be the precipitate in this reaction. 4. 92What are three characteristics of a base? E Answer: a. Bases taste bitter. b. Bases feel slippery. c. Bases change change red litmus paper to blue. 4. 93What are three characteristics of an acid? E Answer: a. Acids taste sour. b. Acids change blue litmus paper to red. c. Acids react with certain metals to produce hydrogen gas . 4. 94What kind of bonding is found in all salts? E Answer: ionic 4. 95Give an example of a monoprotic acid, diprotic acid, and triprotic acid. E Answer: (answers will vary) HNO3 , H2CO3 , H3PO4 . 96Write the net ionic equation for the following reaction. Aqueous iron (III) sulfate is E added to aqueous sodium sulfide to produce iron (III) sulfid e solid and aqueous sodium sulfate. Answer: 2Fe3+ (aq) + 3S2 – (aq) > Fe2S3 (s) 4. 97What is the oxidation number for each of the elements in the following compound? M Cs2Cr2O7 Answer: Cs1+, Cr6+, O2 – 4. 98Identify the element being oxidized, the element being reduced, the oxidizing Magent, and the reducing agent in the following reactions. 4Al + 3O2 > 2Al2O3 Answer: Al is oxidized;O2 is reduced; Al is the reducing agent; O2 is the oxidizing agent . 99Identify the element being oxidized, the element being reduced, the oxidizing Magent, and the reducing agent in the following reactions. 2KBr + F2 ? > Br2 + 2KF Answer: Br – is oxidized, F2 is reduced, KBr is the reducing agent, F2 is the oxidizing agent 4. 100What is the oxidation number for each of the elements in the following compound? M BaNaPO4 Answer: Ba, +2; Na, +1; P, +5; O, -2 4. 101What is the oxidation number for each of the elements in the following compound? M K2TaF7 Answer: K, +1; Ta, +5; F, -1 4. 10 2Thorium metal is prepared by reacting thorium oxide with calcium. M ThO2 + 2Ca > Th + 2CaOWhat substance is reduced? What is the reducing agent? What substance is oxidized? What is the oxidizing agent? Answer: Th4+ is reduced, Ca is the reducing agent, Ca is oxidized, ThO4 is the oxidizing agent 4. 103Batteries in our cars generate electricity by the following chemical reaction. M Pb + PbO2 + 2H2SO4 > 2PbSO4 + 2H2O What substance is reduced? What is the reducing agent? What substance is oxidized? What is the oxidizing agent? Answer: Pb4+ is reduced, Pb is the reducing agent, Pb is oxidized, PbO2 is the oxidizing agent 4. 104Describe the procedure used to make 3. 0 liters of a 2. M KCl solution, starting Hwith solid KCl. Answer: a. Determine the molar mass of KCl, which is 74. 55 g/mol. b. Weigh out 447. 3 g of KCl and dissolve to form exactly 3 liters of solution. 4. 105What is the molarity of a solution that contains 5. 0 moles of solute in 2. 00 liters of Esolution? Answer: 2. 5 M 4. 106The solubility of Ba(NO3)2 is 130. 5 g per liter at 0 °C. How many moles of Hdissolved salt are present in 4. 0 L of a saturated solution of a Ba(NO3)2 containing 130. 5 g/L at 0 °C? Answer: 2. 0 mol 4. 107What is the molar concentration of ions in a solution prepared by mixing M100 mL of 2. 0M KCl with 50 mL of a 1. M CaCl2 solution? Answer: 4. 2 M 4. 108What volume of concentrated nitric acid (15. 0 M) is required to make 100 mL of a M3. 0 M nitric acid solution? Answer: 20 mL 4. 109During a titration the following data were collected. A 10 mL portion of an Munknown solution was titrated with 1. 0 M NaOH. It required 40 mL of the base to neutralize the sample. (a) What is the molarity of the acid? (b) How many moles of acid are present in 2. 0 liters of this unknown solution? Answer: a. 4 M b. 8 mol 4. 110If 145 g of potassium nitrate were added to water to make 1500 mL of solution, Mwhat would be the molarity of the resulting solution?Answer: . 956 M 4. 111During a ti tration the following data were collected. A 50 mL portion of an HCl Msolution was titrated with 0. 50 M NaOH. It required 200 mL of the base to neutralize the sample. How many grams of acid are present in 500 mL of this acid solution? Answer: The acid is 2 M. 36. 5 g of HCl 4. 112Identify the Bronsted/Lowry acid in the following reaction. M NH3 + H2O > NH4+ + OH- Answer: H2O 4. 113Identify each of the following as either good or poor conductors of electricity. M a. CaSO4 b. Pb(C2H3O2)2 c. glacial acetic acid d. gasoline (C8H18)Answer: a. good b. good c. poor d. poor 4. 114What is the substance acting as a Bronsted-Lowry acid in the following reaction. M HSO4- + NH4+ > H2SO4 + NH3 Answer: NH4+ 4. 115The water solution found in cells and in blood makes up approximately 80% of the mass of the human body. This solution has a concentration of 0. 21 M NaCl and has a density of 1 g/mL. How many pounds of salt are present in an 180 lb adult? Answer: 1. 77 lbs (802. 5 g) TRUE-FALSE QUESTION S 4. 116We balance chemical equations because they obey the law of definite proportions. M Answer: F 4. 17From the following equation, we can deduce that six hundred P4O10 molecules M would react with one hundred H2O molecules. P4O10(s) + 6H2O(l) > 4H3PO4(aq) Answer: F 4. 118The following equation is balanced. M Ca(NO3)2(aq) + H2SO4(aq) > CaSO4(s) + 2HNO3(g) Answer: T 4. 119Sugar dissolves in water, therefore it is a strong electrolyte. E Answer: F 4. 120Silver chloride (AgCl) has an extremely low solubility in water; therefore, it is a Eweak electrolyte. Answer: F 4. 121Most compounds containing chlorides, bromides, and iodides are soluble except Ethose of Ag+, Hg, and Pb2+.Answer: T 4. 122The following reaction is an acid-base neutralization reaction. E H2SO4(aq) + CaBr2(aq) > CaSO4(s) + 2HBr(g) Answer: F 4. 123The oxidation number of N in NO is +7. E Answer: F 4. 124Hydrogen is oxidized in the following reaction. M H2 + Cl2 > 2HCl Answer: T 4. 125The following equation is an exam ple of a net ionic equation. M Na+ + Br- + Ag+ + NO3- > AgBr(s) + Na+ + NO3- Answer: F 4. 126The oxidation number of iodine increases by 6 in the following reaction. M 2MnO4- + I – + H2O > 2MnO2 + IO3- + 2OH- Answer: T

Saturday, September 28, 2019

Developing a Teaching Plan Essay Example | Topics and Well Written Essays - 1250 words

Developing a Teaching Plan - Essay Example This comes off as friendly yet she is still in charge of the classroom. Bringing order into the classroom early on can help establish a set of solid rules to follow and discipline. This type of treatment of the students' materials also showed respect not only to the teacher and her rules but it also taught the children to keep their items in good condition rather than askew. Since this was taught early on, it was continued to be implemented throughout the year. She also was very organized, letting students know what to expect each day to learn. This was so that students would be able to see their guidelines for the day and implement them so they could see what they had accomplished throughout the school day. She also uses methods to introduce the fact that students will be expected to learn cursive, not immediately but down the road during the year. She also establishes order using chips, assigning jobs and posting a classroom clock. Ms. Petone uses numerous methods to keep her stude nts organized. Though they are just third graders, she establishes order in her classroom early on. The students know what is to be expected of them and there are few surprises. She rewards her students for jobs well done and also gives each student their own responsibilities. Every day is a schedule. Students know what different tools or areas are used for. She gives students direction and is proactive in adapting these procedures to her classroom. Analysis, Exploration and Reasoning When analyzing the way that the students behaved in following Ms. Petrone's classroom structure, it is evident that it works because she was discussing that by the one-hundredth day of school, the students would still be organized. A predicted student level of engagement in this scenario would be that the students would be more respectful to the teacher. She is friendly and makes sure that the students understand instead what she is saying. She does not talk down to them so they are more than likely mo re open to being responsive. Since they know what everything in the classroom is for, they are more than likely to know when and what certain items or areas in the classrooms are used for. The strong structure of the classroom is indicated using the board with the day's routine on it. This helps students feel like that they have accomplished more and keeps them more focused and on target to see what they have achieved. The students will more than likely be willing to please the teacher and will learn responsibility through the classroom jobs she has assigned them. Since Ms. Petrone is rewarding the entire class for good behaviors and attendance, it is also another way to get them to work as a group. No child wants to be the one reason that the entire class did not receive a token. One classroom routine that has obvious purpose is the classroom schedule. This shows the entire schedule of the day so that the classroom students can see what they are supposed to be doing and when. Once they have completed one task, they can move on to another. This gives them a feeling of accomplishment and achievement. Also, when a child sees what they have done, they are more likely to be able to recall what they did at school that day. This actually keeps everyone on schedule. If something goes off schedule then it just gets pushed back to be a task for the next day. The students will be excited once they see that their tasks have been checked off of the list. Connections to Other

Friday, September 27, 2019

The Mystery Of Pyramids Essay Example | Topics and Well Written Essays - 2500 words

The Mystery Of Pyramids - Essay Example Pyramids are mysterious in all the aspects they reveal; the enormous sizes, the greatness, the artifact, the architecture and the life after death. The most important aspect that inspires awe in the Egyptian pyramids are the existence of mummies that are still extant in the world, after so many years have passed since then. The perfect shape of pyramids also manifests an array of historical expertise and efforts exerted by the laborers. As the people started building pyramids, they got perfect in the art. This paper examines the history of pyramid construction, the perfection of this art as well as the beliefs of people behind the pyramid building. It also probes into the belief of Egyptian people concerning the life after death. The Egyptian pyramids reflect the testimony of a whole civilization that existed in the world about 5000 years ago. These pyramids were mostly built during the fourth dynasty of the Old Kingdom of Egypt, which happened to be one of the modern dynasties of its time. At that time, the rulers in Egypt were known as "Pharaoh" i.e., the king. Egypt was a civilization where people staunchly believed in eternity, in the concept of life after death. Pyramids, as they continue to withstand the test of time, are evidence to the fact that Egyptians wanted their kings to exist for eternity so that every one in the kingdom could be assured of perpetuation of their life after death (Ancient Egypt, home 1) All the Egyptian pyramids were built in typically the same standard form. These pyramids had the same sort of passages and chambers for the King as well as the people of his family and court. The tombs of these people surrounded the Kings' pyramids in the same manner throughout the Egyptian pyramid era. The passages and ways under the ground were constructed in the standardized vein during the periods of all the Egyptian Kings. However the size varied due to the ability and expertise of Egyptian people in building such huge monuments that marked the history of Egyptian civilization capturing the interest and awe for the world, generation after generation (The Built of Egyptian Pyramids). There exist about hundred pyramids in Cairo the Egyptian capital, however the ones at Giza happen to be the mysterious of all with respect to their size as well as their reflection of early Egyptian life. These pyramids of Giza also referred to as the Great pyramids, are popular even today due to the mysteries they unfold regarding the ancient Egyptian livelihood (The Pyramids Of Egypt). The History Of Egyptian Pyramids Pyramids have a mysterious history signifying the early Egyptian norms and beliefs concerning death and life after death. Before pyramids, the Egyptian people used to build stone graves and monuments with desert soil and stones. The first ever pyramid was the pyramid with steps constructed at Saqqara for King Zoser in 2750 BC (Ancient Egypt, home 1). The step pyramids were built with no experience and expertise of people in the construction work. Hence, the variation in shapes and designs of pyramids continued perpetually in the successive eras reflecting the yearning of Egyptians for something great that could keep their kings alive through the eternity. And that was specifically true of these pyramids; the efforts millions of Egyptian labors are still alive in the form of pyramids that continue to remain extant today, making the age of modernity

Thursday, September 26, 2019

Bereavement Essay Example | Topics and Well Written Essays - 6250 words

Bereavement - Essay Example The mourner's history of losses, personality style, and pre-morbid mental health adjustment also impact the grief process (Rando, 1993). Clearly, the traumatic circumstances that surrounded the events of September 11th added an unprecedented degree of complexity to the grief of those who experienced losses that day. While it appears reasonable that issues related to the trauma itself must be resolved before there is sufficient intrapsychic energy to deal with the loss per se, parsing out the differences between the symptoms of post-traumatic stress and those of complicated grief can be challenging (Figley, Bride, & Mazza, 1997). Depressive symptoms may also be confusing and interfere with recognition of and response to the symptoms of complicated grief (Rando, 1993). Especially in the initial phases of recovery from a traumatic loss, individual interventions are an appropriate modality of treatment. The process of assessment for the variety of co-morbid risks that can accompany traumatic loss is facilitated in individual sessions. There is also the opportunity to provide support and problem solving that specifically address the challenges that have been generated by both the loss itself, the circumstances surrounding it, and its intrapsychic concomitants. But because of the sense of emotional isolation that commonly accompanies both trauma and the loss of a significant other, support groups are an excellent adjunct to individual treatment (Figley et al., 1997). Studies report the importance of the supplemental support system such groups provide, and the critical necessity for the normalizing discussions about reactions and difficulties that take place in group sessions (Yule & Udwin, 1991; Fitzgerald, 1994; Rando, 1988; Underwood & Dunne-Maxim, 1992). In later stages of recovery, group support can be essential to the process of going on with life. Immigrants and Cultural Minority Groups Given both the effect that culture has on grief and bereavement, and the disproportionate rates of infant death, particularly among Afro-Caribbean immigrants compared to European, Latin American, Mexico and those born in the United States, we sampled providers serving this community. The importance of cultural competence cannot be overstated. Cultural competence should include: providers being aware of their own cultural traditions and beliefs, learning about the cultural beliefs and customs of the community being served, genuine appreciation and respect for cultural diversity and being empathic, flexible and prepared to tailor the care to meet individual and family needs of those that have suffered a loss (ACOG). The Needs of People Experiencing Loss, Grief and Bereavement There was broad agreement that the needs of individuals in relation to loss, grief and bereavement are highly individualised. There is a wide range of grieving styles and experiences. However, the fundamental needs of bereaved individuals are for support and acceptance. This includes recognition and validation of their grief and grieving style, from family, friends, employers and the general community. Arguably, grief and bereave

Wednesday, September 25, 2019

External influences on career decision Essay Example | Topics and Well Written Essays - 3750 words

External influences on career decision - Essay Example A few years down the line, the child starts asking the same question, â€Å"When I grow up what will I be?† like the words of the famed song â€Å"Que Sera Sera.† Today a child sees a toy engine and wants to be an engine driver, tomorrow he sees the smart firemen on their shiny fire engines and he wants to be a firefighter, the next day he sees Superman on TV and wants to be him. Even when the child visits a doctor he immediately wants to be him. Every day he wants to be something new, something wonderful, something adventurous. Gradually, as he grows into a teenager, he wants to do something great like to become an astronaut flying into space, a scientist making the most important inventions, and so on. Then the time comes when he has to actually make the decision. What is he going to do? It is a very difficult question. Very few have an answer ready, though one has mulled over it a million times in the past. Let us consider these lucky ones or smart ones who have alre ady decided what they are going to do with their lives. Who are they? We can call them the lucky ones because they have recognized their innate ability, their talent. These are the ones who have been born with some extraordinary skill and have been able to identify this talent or skill either on their own or with the help of others. It could be a great voice, ear for music, a talent for dancing, sporting, mimicry, acting, painting, or sculpting. They are the geniuses. They know what they want to do with their life and that becomes their career choice, or more accurately their passion in life. This is more of an internal influence on career choice. There is no confusion. He simply aims to reach the pinnacle of excellence in that field. These are the extremely talented people who are lucky to have identified their talents. Hence, we can say that they fall into the category of the chosen few. The next category of people being those who are less talented but extremely interested in spec ific fields – these fields mostly include the arts like music, painting, etc., or any specific sporting activity. These people are passionate about their interests and don’t mind working really hard to groom themselves to acquire success in their field of interest. This again is an internal influence. So, an internal influence can be defined as â€Å"originating within the individual† and the main motivation here is individual satisfaction† (Duffy and Dik, 2009). External influences are those â€Å"which originate outside the individual† and the main motive is to satisfy this â€Å"external factor or criteria.† There are too many external influences on an individual’s career choice. It is not possible to list all of them. But in this research we will make an attempt to study the major ones. First of all the external influences are of two kinds – those that motivate and those that restrict. Motivating factors could be the people around you, your needs, and your inspirations. Constraints could be your belonging to a certain race or gender, living in a certain geographic location, the resources at your disposal (financial or otherwise). But, as we can see, though most of them are not within ones personal control, all these factors do play a major role in the choice of career. Family Most studies show that the family and the immediate social environment play a major role

Tuesday, September 24, 2019

Personal reflection on design Essay Example | Topics and Well Written Essays - 1500 words

Personal reflection on design - Essay Example ve teaching design to pass information across to the target group will aid in the learning process as pupils will be able to grab much of what they are being told (Agostinho, 2006). Moreover, teachers will be able to pursue their careers with much ease as they provide quality education without investing a lot of time. The core purpose of a teacher is to offer quality education to his/her students. This can only be measured through the outcomes of an assessment exercise (McAndrew, Goodyear and Dalziel, 2006, p. 216). I believe that a concerned teacher will offer an assessment exercise to her/his pupils after a lesson to assess how much the pupils have understood what has been presented. Consequently, the teacher’s satisfaction will be attained if only he/she will find out that the pupils have extensively comprehended what was taught. Waters and Gibbons (2004, p. 57) state that a teaching design can be conducted in order to: illustrate the tasks assigned to the pupils, the resources available to the students to assist them in carrying out those tasks and how as their teacher, you are going to offer them support. As a primary teacher I have had to go through a lot of challenges in my teaching career. While in college we were taught on how to prepare prior to conducting lessons (Goodyear, 2005, p. 85). Among the things you have to do before undertaking a lesson is to prepare a simple lesson plan. A lesson plan is to give a teacher a guideline on the sequence of events during the lesson and what he/she has to accomplish at the end of a lesson. During the early years of my teaching career I had problems with preparing a lesson plan because I considered it to be time wasting. With five years of practice in the teaching field, I understand only too well the essential role of a lesson plan (Waters and Gibbons, 2004, p. 61). Dealing with a young mind I have to be very careful with what I do or say. According to Goodyear (2005, p. 101) children in primary schools

Monday, September 23, 2019

NURSING HEART FAILURE Essay Example | Topics and Well Written Essays - 3250 words

NURSING HEART FAILURE - Essay Example A diastolic heart failure is characterized by the impairment of filling capacity of the ventricles and no change in the ejection fraction. Congestive heart failure is characterized by circulatory congestion and resulting transudation, particularly in the pulmonary tissue. Decompensated heart failure is an exacerbated heart failure usually due to the non compliance of the patient to pharmacotherapy or suggested behavioral modifications. Symptoms of heart failure include dyspnea, orthopnea, paroxysmal nocturnal dyspnea and history of oedema (Scottish Intercollegiate Guideline Network, 2009). The symptoms of heart failure depend upon the side of the affected ventricle. If the right ventricle is affected, symptoms will include peripheral oedema that involves thighs, sacrum and abdominal walls, ascites, anorexia, engorgement of facial veins, tricuspid regurgitation that manifests as pulsations in neck and face, epistaxis and depression. If the left ventricle is involved, the symptoms incl ude dyspnea, impaired exercise tolerance, orthopnea, paroxysmal nocturnal dyspnea, nocturnal cough with or without pink frothy sputum, cold peripheries, cardiac asthma and muscle wasting. The lifetime risk of developing heart failure in an otherwise healthy 40-year old individual is approximately 1 in 5 in the general population (Djousse, 2009). The prevalence of this disease is rising across the world and this places an extra burden on the healthcare systems. While pharmacotherapies are very important, heart failure patients benefit greatly from the behavioral modifications that are a part of standard counseling sessions. This is where the nursing staff plays a key role in managing the patient. Part 2- consider an individual who has the diagnosis of heart failure. Discuss how the nurse can enable the patient to make alterations to his/her lifestyle to improve his/her health. Within your discussion you should examine the use of relevant models/theories that can improve the process o f behavior change. Introduction Chronic heart failure has multiple risk factors and the number of patients suffering from chronic heart failure is increasing by the hour. While genetic propensity in the development of cardiovascular disease is currently under a lot of light, the elimination of risk factors has shown to prevent heart disease and delay the onset of disease in patients with a genetic tendency towards heart failure. These factors include alcohol consumption, smoking tobacco, inactive lifestyle, high intake of food rich in salts and animal fat and stress. The disease may be further aggravated by non-compliance to pharmacotherapy. None of these factors are isolated factors and one person may be exposed to more than one or all of these factors. What is even more important is the fact that these factors, as harmful as they are, are socially accepted activities and therefore, it is imperative to derive a policy and structure that not only deals with this acceptance while mak ing people aware of the hazards that these factors pose but also to take steps that translate into optimal behavioral changes that lead to better cardiac health. Behavioral change theories have been gaining a lot of importance when it comes to planning and implementing public policies as well as designing programs that maximize the number of beneficiaries in the shortest possible time. These theories

Sunday, September 22, 2019

Analyze, discuss, and interpet Machiavelli's Art of War Essay

Analyze, discuss, and interpet Machiavelli's Art of War - Essay Example In this case, through detailed discussion and analysis of the aspects of war, one can apply the theories, mores, virtues, and principles, to that of the nation’s affair and consequently to civilian life. Military and State Since the problem of an ideal society or state has already been exhaustively discussed by Aristotelian and Socratic philosophers; For Machiavelli, the problem that he would like to delve on is how to expand and maintain the power of the state, which must be ordered for the benefit of the greater good of the people. To answer this, Machiavelli always would look back at history i.e. Rome, Sparta, Greece, and discovered a very important pattern—that powerful empires emerge out of violent victories. And it is through this premise that he patterned his ideals of leadership as characterized by his ‘Prince.’ â€Å"For men change their rulers willingly, hoping to better themselves and this hope induces them to take up arms against him who rulesà ¢â‚¬  (Machiavelli, â€Å"The Prince†). Ergo, one of the many important points that could be derived from â€Å"The Art of War† is that military leadership is synonymous to civil leadership. Because war is innate and inevitable as man is in constant conflict with himself, political objectives would be the defining force and or limitation of it. War is fought because of political motives—which again reinforces another premise that Machiavelli made—that civil and military life is inseparable. That the way we function—the mores, principles, and standards that we apply in the military is also applicable or could also govern civil actions. For instance, the discipline of the soldiers could be instilled to workers; the essence of always being prepared for battle—stability under pressure, is a mindset that could be adopted in civilian affairs to be able to handle pressures of everyday life. Military as an Expression of Power Another important poin t that Machiavelli made is that military capabilities of a nation are the direct expression of power. The prince, to be an effective and powerful leader must also have an effective army. To prove his point, he again drew example from history â€Å"Rome remained free four hundred years while armed: Sparta eight hundred: Many other Cities have been dis-armed, and have been free less than forty years.† If a nation does not have an effective army, it must hire foreigners to fight its battle or for it to have someone defending its borders and citizens. But Machiavelli also warned that hiring foreigners for military could pose more dangers, as compared to maintaining your own, as these people could easily corrupt the citizens. When a nation has its own military, it â€Å"has not other fear except of its own Citizens† (Machiavelli, â€Å"Art of War†). Military Strategy and Tactics vis-a-vis Politics According to Sun Tzu, â€Å"the art of war is of vital importance to the state. It is a matter of life and death, a road either to safety or to ruin. Hence it is a subject of inquiry which

Saturday, September 21, 2019

Working time Essay Example for Free

Working time Essay Summary In this case, it describes what happened to a graduate of a prestigious business school during his time of work in the auditing division of Greenspan Company. The graduates name is, â€Å"Bill Church†, the situation is that he was relocated along with his family from the Mid-west to the East Coast. There he bought a home, a second car and did not worry about overextending financially because the company had huge plans for him. After months into the job Bill realized that he was working extra hours and the company did not want client’s billed for extra hours and that he needed to be more efficient. Now Bill was curious and ask a co-worker, Ann, how she get so efficient in auditing client records. Ann explained that she had the same problem a few years ago, but that she succeeded by not just being efficient but by doing what is needed to get ahead. She said that everyone needs to be Eating time, which meant not reporting all the hours required to complete a project and that would make everyone look good as a group. Bill then thought of going to ask the division manager for advice, but had only met Ann once and did not know anything about her. Questions Question1: What should Bill do? Answer: Bill should blow the whistle in his organization that some people are eating time rather than give full hours on his/her project. Question 2: Describe the process through which Bill might attempt to resolve his dilemma. Answer: There are few processes or options through which Bill might resolve his dilemma. First he should not put the overtime and work efficient as possible in his allotted time. Once management ask him why he is not doing well then that will be his to explain his dilemma. Second he has another option to resolve his dilemma by telling the problem direct to the manager. Question 3: Consider the impact of this company’s approach on young accountants. How could working long hours be an ethical problem? Answer: For the young accountant, long working hours are not having a good impact on them. As it affects the courage of the employees and doesn’t help in motivating them, for such type of company’s approach long working hours can cause some health issues and risk of job injury. The other thing is that, as the Bill faces the problem the other accountants will face the same problem.

Friday, September 20, 2019

Preventing Denture Stomatitis

Preventing Denture Stomatitis Ghani F and colleages20 did a study on 50 denture wearers and 50 non denture wearers assessing candida activity through recording pH changes in candida selective medium. Results showed pathological candida activity was significantly higher in denture wearers. While in a study by Yilmaz HH78 27 patients with denture stomatitis and 23 patients without clinical signs of denture stomatitis were compared. They found that there was a relationship between poor denture hygiene and denture stomatitis and the relationship between denture stomatitis and candidal hyphae was not significant. Therefore proper hygiene is important to prevent denture stomatitis and antifungal drugs should not be prescribed without mycological investigation. Opportunistic growth of pathogenic yeasts such as candida is promoted by constant denture wearing which maintains anaerobic and low pH conditions between the denture and mucosa.18. It was revealed in different studies that nearly one third of the patients evaluated slept with their dentures 19,22,89. Similarly other studies have found significant association between denture related stomatitis with denture age and continuous denture wearing88 moreover candida albicans hyphae and lactobacillus was also found in the saliva and palate of denture stomatitis patients89 SURFACE TEXTURE AND PERMEABILITY OF DENTURE BASE: Highly polished surfaces are important not only for aesthetics and patient's comfort but also for low plaque adherence, oral hygiene and denture longevity84. In an in vitro study Van Reenen79 demonstrated that penetration of the unpolished surface which is in contact with the mucosa with candida albicans was greater than that of polished surface. It was confirmed further with the use of fluorescent dye. Another study18 confirmed that surface roughness and cracks facilitate development of biofilm and adherence of plaque. The authors also noted that prolonged brushing of acrylic denture with toothbrush and abrasive dentrifices create scratches that can enhance bacterial attachment and biofilm growth22. DENTURE LINING MATERIALS AND ADHESIVES: In a study by Sato Y and colleagues90 it was found that denture adhesives enhance retention and stability of both ill fitting and well fitting dentures. AL et al 91 suggested that denture adhesives contribute to mucosal inflammation in denture wearers as they are commonly used throughout the day. While in an assessment of 24 denture wearing patients Oliveira and colleagues92 evaluated the number of colony forming units(CFUs) and Candida species in saliva samples which were collected at denture placement, 7 day and 14 day intervals from patients using an adhesive denture strip. 12 patients using the adhesive were compared with 12 patients not using the adhesive. There was no statistical difference between the groups at the 2 weeks analysis. MANAGEMENT OF DENTURE STOMATITIS: Placebo-controlled studies reported that treatment with either oral fluconazole (50mg/day for 2 weeks) or topical miconazole (2% gel applied to fitting surface of the denture 3 times daily for 2 weeks) significantly reduced the presence of candida on oral mucosa and decreased inflammation in denture stomatitis93 . Cross LJ et al94 reported capsule and liquid formulations of itraconazole ( 100 mg 4 times a day for 15 days), fluconazole alone ( 50 mg orally for 14 days) or in combination with chlorhexidine applied to fitting surface of the denture 2 times a day for 2 weeks and amphotericin ( 40mg oral dissolving lozenges 4 times daily and topical cream applied to fitting surface of denture) all to be effective in the treatment of denture stomatitis. In a study by Mililla L et al95 amorophiline antifungal varnish was applied once or twice a week for 6 months in patients affected by nystatin resistant denture stomatitis. Results showed significant decrease in candidal count and improvement in symptoms of denture stomatitis. In a study photodynamic therapy was found to be an effective method for resolving candida spp. on dentures96 In a study by Webb et al97 nursing home patients with denture stomatitis were randomized to maintain their usual hygiene procedures or had their dentures cleaned daily with overnight soaking in sodium hypochlorite and microwaving. Relative to control group both cleaning techniques showed 100% reduction in candida colonization and clinical improvement in denture stomatitis. In another study 10% vinegar solution was used for the immersion of dentures and was found to be effective in decreasing the quantity of candida spp in saliva and the presence of denture stomatitis 98 . Cryosurgery is the treatment of choice in patients with Type III denture stomatitis along with prosthesis substitution34. POST INSERTION INSTRUCTIONS REGARDING MAINTENANCE OF THE PROSTHESIS: To decrease the levels of biofilm and harmful micro organisms , patients who wear dentures must do the following: Dentures must be immersed and brushed with an effective and non abrasive denture cleanser everyday18. Denture cleanser must only be used to clean dentures outside the mouth62. Dentures must be rinsed thoroughly after immersion and brushing with denture cleansing solution before reinsertion in the oral cavity16. Dentures should be cleaned annually by a dentist using ultrasonic cleanser to minimize biofilm coverage overtime27. Dentures must never be placed in boiling water77. Dentures must never be soaked in sodium hypochlorite bleach for periods greater than 10 minutes because it may damage the dentures28. Dentures should be immersed in water after cleaning, when not inserted in oral cavity to avoid warping16. MECHANICAL METHODS OF DENTURE CLEANING: Brushing with tooth brush, denture brush and pastes: Scanning electron microscopic images and microbiologic essays have demonstrated that cleaning the dentures with water and tooth brushes is ineffective at removing microorganisms62. While in a study by Nishi Y and colleagues 25 it was found that the quantity of micro organisms was significantly reduced in the outpatients who used a denture brush for cleaning the prosthesis. Salles AES and Macedo LD99 found in a study that brushing with a denture paste|(Corega Brite) was the most effective method of disinfecting dentures followed by brushing with neutral soap and brushing with water only was the least effective method. It was found by Lira AF et al100 that tooth brushing promoted higher levels of surface roughness when compared to chemical disinfection while boiled resins were found to be more prone to surface roughness and biofilm accumulation than microwaved resins. Pisani MX and Bruhn JP et al101 analyzed surface roughness and weight loss in acrylic caused by dentrifices. They found that the conventional dentrifice containing sodium bicarbonate produced greatest weight loss and surface roughness while dentrifices containing chloramine T and fluorosurfactant produced less weight loss and surface roughness. While in another study it was found that dentrifices containing 1% chloramine T and 0.01% fluorosurfactant decreased biofilm coverage but were ineffective against candida102. Ultrasonic cleaning: Ultrasonic devices are helpful in removing the plaque adhering to dentures by producing microscopic cavities that grow and burst creating voids that result in localized areas of suction 16. Gwinnet et al103 showed in different ways effective disinfection of inoculated dentures using ultrasonic treatment in a water bath as well as in various baths of antiseptic and detergent agents. In another study it was found that ultrasonic cleaning when combined with immersion in a peroxide based cleanser solution effectively reduces the quantity of micro organisms surviving on dentures25. Hence may be a suitable method for elderly who find brushing their dentures difficult. Studies have found that ultrasonic cleaning is not completely bactericidal but improves the killing of bacteria16. Chemical Methods: Soaking in household solution: Sodium hypochlorite diluted 1:10 in tap water is adequate for killing adherent micro organisms but is ineffective against calculus buildup and stains. Metallic elements in the denture acquire a black stain after soaking in bleach for greater than 10 minutes daily62 In a study done by Dr. Roshan Khan 5.25% sodium hypochlorite was more effective in disinfecting dentures as compared to 0.2% chlorhexidine at a 5 minute immersion period28. Surface roughness was evaluated by Paranhos HDO et al64 and they found that immersing the acrylic resin denture in 0.5% sodium hypochlorite solution every night for more than a year and a half resulted in increased surface roughness while no effect was noted regarding the flexural strength of the acrylic. A major issue in immuno compromised and hospitalized patients is the emergence of methicillin resistant staphylococcus aureus(MRSA) which increases mortality rates significantly 16. Lee and colleagues104 showed that MRSA can be killed effectively with sodium hypochlorite. The use of vinegar (acetic acid) was evaluated by Basson et al105 and they found it effective at killing adherent micro organisms albeit less effective than sodium hypochlorite. Vinegar has an advantage over bleach and it is that inadequate rinsing after soaking in vinegar does not result in mucosal damage. In another study vinegar alone is found to be least effective at removing denture plaque but when used in combination with brushing its results were comparable with those of denture cleansers24 Soaking in a commercial solution: Immersing the dentures in denture cleansers reduces the micro organisms and plaque and is found to be a suitable method for denture cleansing specially for geriatric patients106. It was found that soaking in alkaline peroxide every night for more than a year resulted in color alteration of the resin64. In a study it was found that the combination of brushing and peroxide cleansers was the most efficacious method to remove denture plaque24. It was found in a study by de Andrade IM and colleagues107 that the effervescent tablets are effective in reducing streptococci mutans and total aerobes from denture biofilm. However, they were not as effective against C. albicans Mc Cabe and colleagues108 reported that effects of alkaline peroxide solution were enhanced using water at a temperature of 50 centigrade. In a study done to investigate the relationship between the frequency of use of denture cleanser and the quantity of micro organisms adhering to dentures it was found that patients who used denture cleansers daily or 3-4 times a week had significantly lower amount of micro organisms than the patients who used the denture cleanser once or less per month25. While in a study by Jose A and colleagues23 it was concluded that denture cleansers were effective against Candida albicans activity both in terms of removal and disinfection but residual biofilm retention that could lead to re growth and denture colonization was seen. Hence alternate mechanical cleaning methods are required to enhance biofilm removal.. New materials for denture immersion contain silicon polymer that provides a protective coating on denture as a final step in cleaning process. Coating helps to minimize adhesion of debris throughout the day until the next cleaning27. MICROWAVE RADIATION Effectiveness of microwaving depends on solution in which the dentures are immersed, the time of exposure, the level of power of microwave oven and the types of micro organisms adhering the denture109. Senno P and colleagues110 found that putting the dentures in denture cleanser and then microwaving was efficient in disinfecting dentures with lower irradiation time and temperature than the use of microwave irradiation alone therefore avoiding denture distortion. While in another study it was concluded that immersing the denture in a cup of water to transfer heat uniformly during microwave sterilization was more effective111. While Kaskin et al112 showed that independent of solution used irradiation for 15 minutes at 500 watt achieved complete sterilization of acrylic resin base materials contaminated by Staphylococcus aureus, Escherichia coli, candida albicans and streptococcus mutans. It was concluded by Brondani MA et al109 that irradiation time above 15minutes and voltage greater than 850 watts may cause distortion and surface roughness of the denture while not affecting the hardness of the material. While in another study 50 seconds of exposure at 850 watt seemed to be sufficient to disinfect the acrylic denture without any adverse effect on the material113. ALTERNATE DENTURE CLEANSING METHODS: Chlorhexidine destroys bacteria by breaking their membranes and inducing cytoplasmic precipitation114. In a study by de Andrade IM and colleagues 107 60 CD wearers participated in a trial for 21 days after getting brushing instructions. They found that the biofilm coverage area after treatment with immersion in 2% chlorhexidine for 5 minutes was the lowest when compared to immersion in water and in 0.12% chlorhexdine for 20 minutes. While in a study by Uludamar A and colleagues26 it was found that patients whose upper dentures were sprayed with mouthwashes on palatal surface showed decreased candida count when compared to patients who used effervescent type denture cleansers for soaking and cleaning. It can be concluded that mouthwashes can be used as effective denture disinfectants. Tissue cleansing and massage is often neglected part of complete denture care. Brushing the tongue and residual ridges will improve the circulation and remove plaque and debris that may cause irritation of soft tissue and offensive odors 115. In a study by Marchini L116 it was found that 68% of the complete denture wearers didn't clean their tongue. PERIODIC RECALL FOR ORAL EXAMINATION: Patient recall must be a tool to help prevention, allow early intervention and ensure long term dental health117. In a study by Peracini A 51`% of the patients interviewed were not informed about their recall visits.118 An evidence based, patient centered approach taking into account multiple risk categories must be implemented in designing recall visits.119 The American College of Prosthodontists recommends that patients wearing complete dentures must be checked every year for assessment of oral health status, denture fit and function and for evaluation of bone loss as well as oral lesions such as denture stomatitis 16. This recommendation is based on the evidence regarding the relationship between proper complete denture oral hygiene and overall systemic health particularly in dependant elderly45.

Thursday, September 19, 2019

My Story :: Personal Narrative Writing

My Story Early in the morning, twenty four years ago on the twelvth day in the month of July, a baby boy was born at St. Mary's hospital in Athens, Georgia. The Pollock household of three had grown by one. Jennifer, the new boy's three year old sister, had already named him. The new boy was to be called Jody Lamon Pollock. Jody was the name she picked, and Lamon was the mother's father's name. So this is how I came to be Mr. Jody Lamon Pollock. My parents both grew up in a small south Georgia town called Pelham. My mother, Nancy, was the daughter of a farmer and a seamstress. She was the oldest of four girls. My father, Howard, was also the son of a farmer and a house wife. My dad was the ninth of eleven children. Mom and dad were high school sweethearts through out their high school days. They got married August 15, 1971. They will be celebrating their 30th wedding anniversary this next month. My father started working for the United States Department of Agriculture (USDA) when he graduated high school. My father nor my mother attended college. The USDA moved my parents all around the state for the next couple of years until they finally ended up in Jefferson, GA where they have been ever since. My mom landed a job as a secretary at the First National Bank of Jackson County when they first moved here. Since then she has worked her way up through the ranks by hard work and perseverance where she is now the Senior Vice President of Regions Bank. I have only one sibling as I mentioned earlier. Jennifer, who is three years older than I am. She graduated from Jefferson High School. She has since earned an Associate Degree from Gainesville Community College and is also employed by Regions Mortgage. In April of 1995 she married Jon Ray and they continue to reside in Jefferson, Georgia.

Wednesday, September 18, 2019

Values in Contemporary Social Work Essay -- British Social Workers

Shared values are essential in the creating a successful relationship between the client and social worker. Social workers operate within society, not only to assist the individual but to create a more cohesive society. Values and ethics permeate the whole of social work practice and the society within which it practices (Shardlow 1989). Values are afforded a high position within social work, this is highlighted in: â€Å"Social work is a professional activity. Implicit in its practice are ethical principles which prescribe the professional responsibility of the social worker† (British Association of Social Workers (BASW) Code of Ethics). However, there is a danger that any list of values will become something which is quoted as opposed to a useful tool for practice. Values can be helpful as they enable the social worker to analyse their practice in relation to the expectations of the law and the needs of the people they work with. What are values? Is there a place for them in contemporary social work? Is it even possible to define what constitutes values in contemporary social work? Biestek created a list of seven principles with the intention of showing social workers how clients ought to behave. These principles may have been well meaning but they hardly reflect everything that is going on in contemporary society. The very existence of a list of morals can be damaging to social work as it creates a feeling of security based on the presumption that the list itself incorporates everything required for successful practice. Values determine what a person thinks they should do, which may not exactly be the same as what they want to do. Personal values allow us to evaluate the actions of others in relation to our own... ...) Ethical Issues in Social Work, Routledge National Association of Social Workers (1980) Code of Ethics of the National Association of Social Workers, NASW: Silver Spring, Maryland Payne, M (1997) Modern Social Work Theory. Second edition. MacMillan Plant, R. (1970) Social and Moral Theory in Casework, London, Routledge and Kegan Paul Repper, J. & Perkins, R. Social Inclusion and Recovery: a Model for Mental Health Practice, Bailliere Tindal Shardlow, S.M. (1989), The Values of Change in Social Work, Routledge: London Taylor-Gooby. P (1981) Social Theory and social welfare, Edward Arnold. London Thompson, N. (1997) Anti-discriminatory Practice (2nd Ed), London Macmillan Thompson, N. (2000) Theory and Practice in Human Services, Buckingham, Oxford University Press. Wilson, K. et al (2008) Social Work: An Introduction to Contemporary Practice. Pearson, London

Tuesday, September 17, 2019

Essay --

CPR is (cardiopulmonary resuscitation). This procedure is used to restore blood circulation and breathing in a person who is in cardiac arrest. All the cells in a human body require oxygen to survive, they also require a good supply of nutrients and removal of all waste products. In your lungs oxygen enters your blood and carbon dioxide is removed, this process is called gas exchange. Cardiac arrest is when your heart completely stops beating. Although your heart stops, this is not the same as a heart attack . a heart attack may lead to cardiac arrest. There are many causes that can put you in a state of cardiac arrest like, drugs, poising and over – dosing on medications, traumatic injury such as a motor vehicle accidents of any kind or any significant amount of blood loss and also anaphylaxis (and allergic reaction to anything) can also lead to cardiac arrest. If any of these happen blood will stop circulating throughout the body. Breathing begins to decrease most of the tim e you stop breathing for several minutes. The purpose of CPR is to keep oxygen in the blood so it can continue to flow, throughout the body to keep the vital organs alive. CPR will not restart someone’s heart, it just keeps the blood flow circulating until official help arrives , once you come across someone that isn’t breathing you should first see if the scene is clear before you go to help the person( always remember DR ABC always make sure you are not in any DANGER check for a RESPONSE from the person you’re doing CPR on shake them gently . make sure the AIRWAY is clear by kneeling by the persons head and tilting there head backwards . check if the person is BREATHING by placing your ear above their mouth and looking at their chest for normal breathin... ...e on a life jacket, and that it’s on correctly. †¢ Make sure they don’t swim alone or in bad weather. †¢ Teach your kids how to swim , doggy paddle ETC If your child gets stung by some type of insect make sure you identify were the insect bit them at and also try not to let your child scratch the bite as much because it can cause irritation and can make the bite area even larger if you need to , too prevent insect bites use lights that help keep the bugs away , you can also use skin repellant to keep the bugs away also make sure when you eat things like watermelon or anything sweet make sure you are in your house were bugs can get to it , because food and sweet things attract bugs , another thing that attracts bugs is sweet smelling perfume , lotions , colognes lip balms attract bugs , so make sure you try to avoid those things during the spring and summer season.

Monday, September 16, 2019

Concept Comparison and Analysis across Theories Essay

The nursing profession has made some remarkable accomplishment during the 20th and 21st centuries, which has led to the recognition of nursing as an academic discipline. The move toward a theory- based practice has shifted the focus from the vocational view of nursing to a more meaningful and organized profession. As such, the knowledge and practice of nursing is embedded and guided by the theoretical framework of the profession. Theories also give direction and purpose to the nursing profession, and they are developed to improve nursing care and education, and to provide a basis for practice. A theory is an idea recommended to explain a phenomenon, interprets observation, defines relationships, and project outcome (Parker & Smith, 2010). The theories of nursing can be categorize in three areas: (a) grand nursing theories, which gives abroad perspective to the goals and structure of nursing not meant to be easily grasp or tested, (b) middle range theories, contains fewer concept, and relationships are more applicable to nursing practice (c) practice level theories, which has more direct impact on nursing practice than more abstract theories. Mid-range theories are both easily understood and applicable to the daily practice of nursing. For the purposes of this assignment, the core concepts of two middle range contemporary nursing theories will be highlighted and the concept definitions analyzed. One theory will be discussed along with its application to nursing practice, the theory’s concept statement, metaparadigms, philosophies, and conceptual model. Finally, nursing resources, and nursing knowledge from theorists are included in this paper to show the contributions to nursing science. Core Concept A concept is a word or ideas that provide a mental image to promote communication about a phenomenon and can be either empirical or abstract experience (Walker & Avant 2011). Core concepts are the fundamental building blocks in the development of theories, as such; theorists employ core concepts in the process of theory advancement (George, 2011). The metaparadigm of nursing is composed of four main concepts they are; person, health, environment, and nursing (George, 2011). The core concepts of the two contemporary nursing theories selected are Leininger’s culture care theory, and Kolcaba’s comfort theory. These theories are considered middle range theories because they are more understandable and easier to apply to day-to-day nursing practice and may be used to suggest an intervention. Conversely, the grand theory is more extensive and provides a framework for organizing ideas (Smith & Liehr, 2008). Although health care has experienced numerous changes over the past decades, the basic principle of nursing, caring for the sick, has not changed. With the addition of evidence-based care as a result of nursing research and extensive research by nursing theorists there are additional components to nursing that nurses have to know and understand to provide excellent care. Unfamiliarity with someone else’s culture can lead to feelings of fear and insecurity due to differences in belief, values and practices (Leininger (1991). These theorists view the patient as a whole and believe care should be administered from a holistic approach. Concept Analysis Leininger is the innovator of the transcultural nursing movement in research, education, and practice. The overarching concept of this theory (culture) – based discipline is intended to serve individuals, communities, establishments, and societies. In the 1950s, while working in a child guidance home with troubled children and their parents, she observed repeated patterns of behavior in children that seemed to have a cultural basis. She identified these repeated patterns as the missing link in nursing understands of knowledge and culture care that is required to support compliance, wellness, and healing. As a result of this experience, she pursued further education in human behaviors that led to the development of her transcultural nursing theory (George, 2011). Leininger (1991) defines Transcultural nursing as â€Å"the comparative study of cultures to understand  similarities (culture universal) and difference (culture-specific) across human groups† With this defini tion as the foundation for her work, Leininger focused her practice on cultural care values, practices, and beliefs of individuals or groups of different cultures. The goal of her theory is to provide nursing care that promotes health or well-being to help people faced with illness or death, in a culturally meaningful way (Leininger, 1995). Transcultural nursing is established on the basis that people of different cultures not only define ways in which they perceive and experience care, but how they relate these perceptions, and experiences to their general health (George, 2011 ). Kolcaba worked as the head nurse on an Alzheimer patient care unit; she observed that patients were nonparticipants in some of their daily living activities. This observation led to her development of the Comfort Care Therapy. Kolcaba’s comfort theory gives nurses the tools required to identify the comfort needs of patients and families and ways to meet those needs. Comfort, she opined, is the purposeful action taken to address ones physiological, cultural, social, financial, spiritual, environmental and physical needs. Accordingly, if the patient needs time to voice concerns and questions, it is imperative that the nurse listens attentively and offers culturally appropriate encouragement and reassurance (Kolcaba, 2003). The ideas of other nursing theorists (Orlando, Henderson, Patterson, and Zderdad) were employed to explain the three different types of comfort needs: (1)ease-the state of calm and contentment, (2) relief-the state of having specific comfort need met and transcendence, and (3) transcendence- that state in which one can rise above problems and pain( Parker & Smith, 2010). Because comfort is a primal human need, it must be experienced in a holistic manner, and nurses who practice comfort care in their daily routine are innovative, effective, and satisfying to themselves and their patients. The contexts in which comfort need exist are physical, psycho-spiritual, socio-cultural, and environmental. Nurses are responsible for ensuring that patients are comfortable and safe because meeting the comfort needs of patients and their families leads to increased satisfaction, dedication and commitment to the organization (Kolcaba, 2003). Transcultural and Comfort theories focus on different aspec ts of patient care; however, commonalities exist between the theories. Concept Comparison In comparing and analyzing the concept definitions among the two theories it is important to note that Leininger’s goal of nursing care is to provide care consistent with the patients’ cultural values, practices, and beliefs. Nurses are often unaware of the cultural issues surrounding a patient’s health and need for care which results in a lack of sensitivity towards the patient. According to Leininger (1995), cultural proficiency begins with the examination of personal values, biases, prejudices, and beliefs of the caregiver. Leininger’s theory was created to establish cultural competence among nurses and other caregivers because it is important to have contact and communication with people of other cultures, thus creating awareness. One important factor of nursing care is the engagement with individuals of different cultures by asking questions prior to providing care. The failure to include culture into patient care increases the possibility of mistrust by patient and resentment from the health care provider. Comfort and trust strengthen when nurses ‘consider cultural preferences during patient care (Andrews & Boyle, 1999). Contrariwise, Kolcaba’s comfort theory is viewed from a holistic approach. The four areas of the human experience are addressed are the physical, which includes all physiological scopes, the psycho-spiritual, which is self-awareness, the sociocultural, which includes the family, interpersonal relationships, traditions, rituals, and religious practices and the environment( Kolcaba, 2003). Cultural sensitivities are important to patients and families, and they are allowing for significant moments to remember a nurse. Nurses also reflect on these moments which give them feelings of satisfaction. Nurses can show small, non-technical acts of comfort for example a back massage, holding a dying patients hand, washing hair, sitting with an anxious patient and holding a crying child for a parent. Each of these gestures is an example of holistic comfort measures that will have a positive impact on a patient’s total comfort (Kolcaba, 2003). Like patients, nurses have comfort need which includes a safe and clean work environment, continuity of care, flexible schedules, and resources for educational improvement. Kolcaba’s comfort model allows nurses to be a part of the decision making process and in-turn provide feedback and support for staff. These comfort measures for nurses provide a strong nursing department and which teamwork and professional goals are fostered  (Kolcaba, 2003). The core of these two theories is care, which is the unifying feature of the nursing profession. Concept Statement, Metaparadigms, Philosophies The selected theory is Leininger’s culture care theory. Leininger is one of the first transcultural, global, nursing consultant and is the founder of transcultural nursing, the transcultural nursing society, and the journal of transcultural nursing. Culture influences every aspect of human life and defines health, illness, and the search from relief from diseases (George, 2011). Culture can be applied to all aspects of health care both in inpatient and outpatient settings. Because of the culturally diverse population in the United States and other first world countries, it is of vital importance that culture care is a part of the curriculum for nursing and other health science related field. Due to health concepts related to cultural groups, people may not choose modern day medical treatment and cures; therefore it is important to educate the communities about culture care. This theory may be best applied to nursing practice by first educating nursing students to develop an understanding, appreciation, and respect for the diversity and individuality of patients’ values, beliefs, and culture regarding illness, treatment and outcome. Extensive training in hospitals and outpatient settings for all nurses, and health care providers is of vital importance. Concept Statement Culturally consistent nursing care is meaningful and appropriate to the cultural beliefs, values and traditions of patients for their health and comfort. Nurses should perform a culture care assessment on admission to determine the scope of care for the patient while in hospital (Leininger, 1995). Metaparadigms Health is a state of living to sustain and help the individual perform their daily care in a culturally beneficial way (Leininger (1995). The environment is defined as â€Å"the totality of geophysical situation† (p. 10). She describes nursing as a learned, humanistic and scientific discipline focused on human care activities. Leininger, however, does not define the concept of person; he states the person is not culturally suitable in many cultures. The  philosophy of nursing is founded on the scope of practice for the profession, and the values individuals hold as basic to their belief in nursing theory (Fitzpatrick & Whall, 2005). Leininger’s philosophy is that there are similarities and differences in culture, which should be explores in relation to ones values, beliefs, and traditions. Resources A website has been dedicated to the housing of vast amount of information on Leininger’s theory. This site contains valuable information on culture theory and transcultural nursing. Additionally, Leininger’s work, research, and publications are all featured on the website. Leininger is a member of Sigma Theta Tau International (STTI), an honor society for nursing, was founded in 1922; it is the second largest of its kind in the United States. The mission of this organization is â€Å"to support the learning, knowledge, and professional development of nurses committed to making a difference in health care worldwide†. Conclusion The conceptual and theoretical models used in nursing provide information on ways to improve practice, develop curriculum and identify goals of nursing practice. The area of nursing theory is experiencing continued growth as theorists continue to create new knowledge that is impacting, positively, the nursing profession. Nurses can no longer afford to provide care as usual but must use new knowledge, skills, and insights to provide nursing care that is culturally relevant and sensitive to the needs of patients. As the complexity and acuity of patients continue to rise, it is notable that a community of practice is established that utilizes strategies that promote the transcultural and comfort needs of both nursing staff and patients. Twenty-first century nursing practice demands that nurses identify and meet the comfort and cultural needs of all patients, family and community. Further, nurses must develop the knowledge and skills that will enable them to provide acceptable care and t o identify available resources for the patient.