A 140-G Block of Copper Is Taken from a Kiln

question 17

Multiple Choice

A 140-g block of copper is taken from a kiln and quickly placed into a beaker of negligible heat capacity containing 290 g of water.The water temperature rises from 6.8°C to 26.8°C.Given c_Cu = 0.10 cal/g⋅°C,and c_water = 1.00 cal/g⋅°C,what was the temperature of the kiln?

• A)720°C
• B)387°C
• C)682°C
• D)441°C
• E)68.2°C

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