Exam 2 review

Exam 2 review - 1. 4.55 2. 1.74 x 10 49 3. 63.6 4. 6.02 x...

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Unformatted text preview: 1. 4.55 2. 1.74 x 10 49 3. 63.6 4. 6.02 x 10 23 5. 48.0 6.6B How many grams are in 4.55 x 10 23 copper atoms? 1. 4.55 2. 1.74 x 10 49 3. 63.6 4. 6.02 x 10 23 5. 48.0 6.6B How many grams are in 4.55 x 10 23 copper atoms? 1. 2.45 x 10 22 2. 1.47 x 10 22 3. 2.95 x 10 22 4. 1.47 x 10 21 5. 6.02 x 10 23 6.10C How many molecules are in 2.45 g of chalk (calcium carbonate)? 1. 2.45 x 10 22 2. 1.47 x 10 22 3. 2.95 x 10 22 4. 1.47 x 10 21 5. 6.02 x 10 23 6.10C How many molecules are in 2.45 g of chalk (calcium carbonate)? 1. 6.90 2. 3.45 3. 5.75 4. 13.5 5. 17.3 6.11B How many moles of oxygen are in 3.45 mol of diphosphorus pentoxide? 1. 6.90 2. 3.45 3. 5.75 4. 13.5 5. 17.3 6.11B How many moles of oxygen are in 3.45 mol of diphosphorus pentoxide? 1. CH 1.5 O and C 2 H 3 O 2 2. C 3 H 5 O 3 and C 6 H 10 O 6 3. C 4 H 6 O 4 and C 8 H 12 O 8 4. C 4 H 6 O 4 and C 2 H 3 O 2 5. C 2 H 3 O 2 and C 4 H 6 O 4 6.19C An unknown compound has a molar mass of 118.09 g/ mol. Given the following percent compositions: 40.7% C, 5.10% H, and 54.2% O; calculate the empirical and molecular formula, respectively 1. CH 1.5 O and C 2 H 3 O 2 2. C 3 H 5 O 3 and C 6 H 10 O 6 3. C 4 H 6 O 4 and C 8 H 12 O 8 4. C 4 H 6 O 4 and C 2 H 3 O 2 5. C 2 H 3 O 2 and C 4 H 6 O 4 6.19C An unknown compound has a molar mass of 118.09 g/ mol. Given the following percent compositions: 40.7% C, 5.10% H, and 54.2% O; calculate the empirical and molecular formula, respectively 1. PbCl 2 2. CaSO 4 3. NaNO 3 4. Al(OH) 3 5. all are strong electrolytes. 7.7C Which of the following compounds are a strong electrolyte? 1. PbCl 2 2. CaSO 4 3. NaNO 3 4. Al(OH) 3 5. all are strong electrolytes. 7.7C Which of the following compounds are a strong electrolyte? 1. ammonia 2. nitrogen dioxide 3. hydrogen 4. carbon dioxide 5. nitrogen 7.20C Which gas is released from the reaction of calcium carbonate with nitric acid? 1. ammonia 2. nitrogen dioxide 3. hydrogen 4. carbon dioxide 5. nitrogen 7.20C Which gas is released from the reaction of calcium carbonate with nitric acid? 1. 6 2. 3 3. 1 4. 5 5. 4 7.21B How many molecules of carbon dioxide are produced from the combustion of one molecule of propane (C 3 H 8 )? 1.1....
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This note was uploaded on 04/14/2008 for the course CHEM 105 taught by Professor ? during the Spring '06 term at Bucknell.

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Exam 2 review - 1. 4.55 2. 1.74 x 10 49 3. 63.6 4. 6.02 x...

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