lecture 6 - Which of the following is the correct, balanced...

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1 Which of the following is the correct, balanced chemical equation for the combustion of ethanol (C 2 H 5 OH)? 1. C 2 H 5 OH + O 2 CO 2 + H 2 O 2. C 2 H 5 OH + 3 O 2 2 CO 2 + 3 H 2 O 3. C 2 H 5 OH + 6 O 2 4 CO 2 + 6 H 2 O 4. 2 C 2 H 5 OH + 7 O 2 4 CO 2 + 6 H 2 O O O O C C O O O O C C Correct Answer: 1. C 2 H 5 OH + O 2 CO 2 + H 2 O 2. C 2 H 5 OH + 3 O 2 2 CO 2 + 3 H 2 O 3. C 2 H 5 OH + 6 O 2 4 CO 2 + 6 H 2 O 4. 2 C 2 H 5 OH + 7 O 2 4 CO 2 + 6 H 2 O
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2 How many fluorine atoms are present in 2.0 moles of AlF 3 ? 1. 3.0 × 10 23 2. 6.0 × 10 23 3. 1.2 × 10 24 4. 3.6 × 10 24 5. None of the above answers is correct. 1. 3.0 × 10 23 2. 6.0 × 10 23 3. 1.2 × 10 24 4. 3.6 × 10 24 5. None of the above answers is correct. Correct Answer: (2.0 moles AlF 3 )(6.0 × 10 23 molecules AlF 3 /mole AlF 3 ) (3 atoms F/1 molecule AlF 3 ) = 3.6 × 10 24
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1. 1.57 mol H 2 reacts. 2. 0.785 mol H 2 reacts. 3. Cannot be determined without more information. 4. 3.14 mol H
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lecture 6 - Which of the following is the correct, balanced...

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