heat = mass × specific heat × temperature change
heat = (25.1 g)(1.0 cal/g°C)(72.0°C)
You can also check the answer by working the problem backwards. For example, take the calories just calculated and divide them by the temperature change and the grams of water; do you get a specific heat of 1.0 cal/g°C?
Author: Fred Senese email@example.com
Copyright © 1997-2010 by Fred Senese
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Last Revised 08/17/15.URL: http://antoine.frostburg.edu/chem/senese/101/thermo/faq/print-energy-required-for-temperature-rise.shtml