CH 301 Quiz 5 - Wright Jacqueline Quiz 5 Due May 4 2007...

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Wright, Jacqueline – Quiz 5 – Due: May 4 2007, 11:00 pm – Inst: Sara Sutcliffe 1 This print-out should have 5 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points The combustion of a certain amount of methane gives off 100 kJ of energy. Dur- ing this process the amount of energy in the universe 1. The answer cannot be determined with- out knowing the heat capacity of methane. 2. increases by 100 kJ. 3. decreases by 100 kJ. 4. does not increase or decrease. 002 (part 1 of 1) 10 points Which of the following reactions corresponds to the value of the heat of formation for the product molecule as found in the tables? 1. Na(s) + 1 2 Cl 2 (g) NaCl(s) 2. CO 2 (s) CO 2 (g) 3. 2 H 2 (g) + O 2 (g) 2 H 2 O( ) 4. SO 2 (g) + 1 2 O 2 (g) SO 3 (g) 003 (part 1 of 1) 10 points The fact that a refrigerator requires energy to move heat from a colder object (the in- side of the refrigerator) to a hotter object
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