Calorimetry: A 90-g aluminum calorimeter contains 390 g of water at an equilibrium temperature of 20°C. A 160-g piece of metal, initially at 305°C, is added to the calorimeter. The final temperature at equilibrium is 32°C. Assume there is no external heat exchange. The specific heat capacities of aluminum and water are 910 J/kg ? K (aluminum) and 4190 J/kg ? K (water). What is the specific heat capacity of the 160-g piece of metal?
A. 470 J/kg ? K
B. 430 J/kg ? K
C. 350 J/kg ? K
D. 310 J/kg ? K
E. 510 J/kg ? K
Answer: A
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