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CH 301 Quiz 4

# CH 301 Quiz 4 - Wright Jacqueline Quiz 4 Due 11:00 pm Inst...

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Wright, Jacqueline – Quiz 4 – Due: Apr 18 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 A CD player and its battery together do 500 kJ of work, and the battery also releases 250 kJ of energy as heat, and the CD player re- leases 50 kJ as heat due to friction from spin- ning. What is the change in internal energy of the system, with the system regarded as the battery alone? Assume that the battery does 500 kJ of work on the CD player, which then does the same amount of work on the surroundings. 1. - 700 kJ 2. - 50 kJ 3. - 750 kJ 4. +200 kJ 5. - 800 kJ 002 (part 1 of 1) 10 points Calculate the energy in calories to heat 372 g of mercury from 37 C to 42 C. The spe- cific heat capacity of Hg( ) is 0 . 138 J / g · C. Answer in units of cal. 003 (part 1 of 1) 10 points The specific heat for liquid argon Ar(
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