AP Chemistry-midterm review - Quia

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a. 252 g b. 63.0 g c. 116 g d. 84.0 g e. 76.0 g ____ 66. The reaction of 5.0 g of fluorine with excess chlorine produced 5.6 g of ClF3. What percent yield of ClF3 was obtained? Cl2 + 3F2 2ClF3 a. 58% b. 69% c. 76% d. 86% e. 92% ____ 67. If a reaction of 5.0 g of hydrogen with 5.0 g of carbon monoxide produced 4.5 g of methanol, what was the percent yield? 2H2 + CO CH3OH a. 11% b. 79% c. 96% d. 24% e. 63% ____ 68. What mass of water is contained in 160. grams of 22.0% KCl solution? a. 125 g b. 86.8 g c. 35.2 g d. 130 g e. 112 g ____ 69. Calculate the molarity of a solution that contains 70.0 g of H2SO4 in 280. mL of solution. a. 2.55 M b. 6.84 M c. 8.62 M d. 9.78 M e. 11.84 M ____ 70. What is the molarity of 175 mL of solution containing 2.18 grams of Na2SO4•10H2O? a. 3.77 10 -3 M b. 6.44 10 -1 M c. 8.78 10 -3 M d. 1.18 10 -3 M e. 3.87 10 -2 M ____ 71. The specific gravity of commercial nitric acid solution is 1.42 and it is 70.0% HNO3 by mass. Calculate its molarity. a. 18.0 M
. 15.8 M c. 12.8 M d. 99.4 M e. 26.2 M ____ 72. When a solution is diluted, what is the relationship of the number of moles of solute in the more concentrated initial volume of solution to the number of moles of solute in the less concentrated final volume of solution? a. The ratio of the numbers is directly proportional to the two volumes. b. The ratio of the numbers is inversely proportional to the two volumes. c. The number of moles of solute in the more concentrated initial volume is always greater. d. The number of moles of solute in the less concentrated final volume is always greater. e. The number of moles of solute in both solutions is the same. ____ 73. Calculate the molarity of the resulting solution prepared by diluting 25.0 mL of 18.0% ammonium chloride, NH4Cl, (density = 1.05 g/mL) to a final volume of 80.0 mL. a. 0.292 M b. 0.059 M c. 1.10 M d. 0.0536 M e. 0.00105 M ____ 74. If 45.0 mL of 0.250 M PbCl4 solution reacts with 20.0 mL of (NH4)2SO4, what is the molarity of the (NH4)2SO4? PbCl4 + 2(NH4)2SO4 Pb(SO4)2 + 4NH4Cl a. 0.502 M b. 1.25 M c. 2.25 M d. 1.13 M e. 0.563 M ____ 75. What volume of 0.130 M HCl solution will just react with 0.424 gram of Ba(OH)2? 2HCl + Ba(OH)2 BaCl2 + 2H2O a. 38.1 mL b. 32.6 mL c. 24.1 mL d. 18.6 mL e. 96.7 mL ____ 76. What volume of 0.132 M KOH solution would react completely with 25.8 mL of 0.198 M HCl according to the following equation? HCl + KOH KCl + H2O a. 86.4 mL b. 25.7 mL c. 38.7 mL d. 17.2 mL e. 3.86 mL
Page 1 and 2: AP Chemistry-midterm review Multipl
Page 3 and 4: d. I, III, and IV e. another one or
Page 5 and 6: e. 2.48 mL ____ 23. Which of the fo
Page 7 and 8: e. Cu(NO3)2 ____ 36. From the follo
Page 9 and 10: d. 0.716 kg e. 5.85 lb ____ 50. Wha
Page 11: c. 462 g d. 735 g e. 583 g ____ 61.
Page 15 and 16: NH3(g) + H2O(l) NH4 + (aq) + OH - (
Page 17 and 18: ____ 95. Which of the following mat
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Page 21 and 22: d. only V e. I and IV ____ 115. Whi
Page 23 and 24: ____ 128. Refer to Ch. 5 Values. Th
Page 25 and 26: epresents the element __________. a
Page 27 and 28: a. Mg > Be > Ca > K > Cs b. Be > Mg
Page 29 and 30: d. Metal oxides are usually basic.
Page 31 and 32: e. ____ 178. How many valence elect
Page 33 and 34: e. 34 24 10 ____ 189. Which one of
Page 35 and 36: III. IV. a. I and II b. II, III, an
Page 37 and 38: c. sp 3 d. sp 3 d e. sp 3 d 2 ____
Page 39 and 40: e. They are often accompanied by th
Page 41 and 42: e. n ____ 230. A radioisotope of ar
Page 43 and 44: Essay b. 1.24 mol/L min c. 3.04 mol
Page 45 and 46: 41. ANS: D PTS: 1 TOP: Formula Weig
Page 47 and 48: 134. ANS: D PTS: 1 TOP: Atomic Orbi
Page 49: ESSAY 227. ANS: B PTS: 1 TOP: Neutr

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