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Moderate

Calorimetry: 100-Gram Metal Sample

APCHEM-XNNOEI

A 100-gram sample of a metal is heated to 100ºC and then quickly transferred to 100 grams of water, initially at 22ºC. The temperature of the water rose to a final value of 35ºC.

Which of the following can be logically concluded from these data?

A

The metal temperature changed more than the water temperature did; therefore, the quantity of heat lost by the metal was greater than the quantity gained by the water.

B

The metal temperature changed more than the water temperature did, but the quantity of heat lost by the metal equals the quantity gained by the water.

C

The metal temperature changed more than the water temperature did; therefore, the heat capacity of the metal must be greater than the heat capacity of the water.

D

The final temperature, 35ºC, is less than the average of the two initial temperatures; therefore, the total energy content of the water and metal decreased.