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determining the final heat of mercury

Submitted by dstribl on Fri, 01/25/2013 - 00:02

A 140g sample of mercury and a 390g sample of iron are at an initial temperature of 25.0^\circ {\rm C}. 250 {\rm cal} of heat is applied to each sample.

 

SUBSTANCESPECIFIC HEAT [\rm cal/(g\cdot{^\circ C})]
Iron0.106
Mercury0.033

 

What is the final temperature of mercury sample?


Amount of heat q = cmDeltaT where c=specific heat capacity, m= mass and deltaT= temperature change. You have all but DeltaT so solve. Once you know DeltaT and the starting temperature, you can easily find the final temp (= DeltaT + starting temperature