A 100-g block of copper is taken from a kiln and quickly placed into a beaker of negligible heat capacity containing 300 g of water. The water temperature rises from 15°C to 40°C. Given cCu = 0.10 cal/g•°C, and cwater = 1.00 cal/g•°C, what was the temperature of the kiln?
a. 500°C
c. 790°C
b. 635°C
d. 535°C
C
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