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April 18, 2015

Homework Help: chemistry

Posted by Ninaya on Sunday, October 2, 2011 at 2:55am.

Calculate the energy in the form of heat, in kJ, required to convert 225 grams of liquid water at 21.0 C to steam at 115 C. Heat of fusion = 0.333 kJ/g; heat of vaporization = 2.26 kJ/g; specific heat capacities: liquid water = 4.18 J/gC., steam = 1.92 J/gC.

A. 88.5 kJ
B. 158 kJ
C. 589 kJ
D. 596 kJ
E. 663 kJ

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