exam 1 chem 102 f09

exam 1 chem 102 f09 - Name: _ Date: _ 1. When 267.4 g of...

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Name: __________________________ Date: _____________ 1. When 267.4 g of ethylene (C 2 H 4 ) burns in oxygen to give carbon dioxide and water, how many grams of CO 2 are formed? A) 839.0 g B) 419.5 g C) 209.8 g D) 9.53 g E) 343.5 g 2. SO 2 reacts with H 2 S as follows: 2H 2 S + SO 2 3S + 2H 2 O When 7.50 g of H 2 S reacts with 12.75 g of SO 2 , which statement applies? A) 6.38 g of sulfur are formed. B) 10.6 g of sulfur are formed. C) 0.0216 moles of H 2 S remain. D) 1.13 g of H 2 S remain. E) SO 2 is the limiting reagent. 3. For the reaction N 2 ( g ) + 2H 2 ( g ) N 2 H 4 ( l ), if the percent yield for this reaction is 74.0%, what is the actual mass of hydrazine (N 2 H 4 ) produced when 22.52 g of nitrogen reacts with 3.95 g of hydrogen? A) 34.8 g N 2 H 4 B) 19.1 g N 2 H 4 C) 26.5 g N 2 H 4 D) 25.8 g N 2 H 4 E) 23.2 g N 2 H 4 Page 1
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4. The reaction of 11.9 g of CHCl 3 with excess chlorine produced 10.5 g of CCl 4 , carbon tetrachloride: 3 2 4 2CHCl + 2Cl 2CCl + 2HCl What is the percent yield? A) 100% B) 34.1% C) 68.3% D) 88% E) 45.5% 5. With what volume of 5.00 M HF will 4.71 g of calcium hydroxide react completely, according to the following reaction? 2
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exam 1 chem 102 f09 - Name: _ Date: _ 1. When 267.4 g of...

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