Hon 3 6-3 7 Review-key reaction Stoichiometry

A 623 mol b 108 mol c 125 mol d 25 mol answer a 15

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A) 6.23 mol B) 10.8 mol C) 12.5 mol D) 25 mol Answer: A 15) For the reaction Pb(NO 3 ) 2 + 2KI → PbI 2 + 2KNO 3 , how many moles of lead iodide are produced from 300. g of potassium iodide? A) 0.903 mol B) 1.81 mol C) 3.61 mol
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D) 11.0 mol Answer: A 16) The combustion of ammonia in the presence of excess oxygen yields NO 2 and H 2 O: 4 NH 3 (g) + 7 O 2 (g) 4 NO 2 (g) + 6 H 2 O (g) The combustion of 43.9 g of ammonia produces __________ g of NO 2 . A) 2.58 B) 178 C) 119 D) 0.954 E) 43.9 Answer: C 17) Calcium carbide (CaC 2 ) reacts with water to produce acetylene (C 2 H 2 ): CaC 2 (s) + 2 H 2 O (g) Ca(OH) 2 (s) + C 2 H 2 (g) Production of 13 g of C 2 H 2 requires consumption of __________ g of H 2 O. A) 4.5 B) 9.0 C) 18 D) 4.8 × 10 2 E) 4.8 × 10 -2 Answer: C 18) Under appropriate conditions, nitrogen and hydrogen undergo a combination reaction to yield ammonia: N 2 (g) + 3 H 2 (g) 2NH 3 (g) A 7.1-g sample of N 2 requires __________ g of H 2 for complete reaction. A) 0.51 B) 0.76 C) 1.2 D) 1.5 E) 17.2 Answer: D 19) Lead (II) carbonate decomposes to give lead (II) oxide and carbon dioxide: PbCO 3 (s) PbO (s) + CO 2 (g) How many grams of lead (II) oxide will be produced by the decomposition of 2.50 g of lead (II) carbonate? A) 0.41 B) 2.50 C) 0.00936 D) 2.09 E) 2.61 Answer: D
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20) GeF 3 H is formed from GeH 4 and GeF 4 in the combination reaction: GeH 4 + 3Ge F 4 4GeF 3 H If the reaction yield is 92.6%, how many moles of GeF 4 are needed to produce 8.00 mol of GeF 3 H? A) 3.24
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A 623 mol B 108 mol C 125 mol D 25 mol Answer A 15 For the...

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