How much energy (in kilojoules) is released when 12.3g of steam at 121.5 degree C is condensed to give liquid water at 64.5 degree C? The heat of vaporization of liquid water is 40.67kj/mol , and the molar heat capacity is 75.3 J/(K mol) for the liquid and 33.6 J/(K mol)for the vapor

Answer 1

I answered this below. I'll try to find it and post it here.

Answer 2

Here it is.
http://www.jiskha.com/display.cgi?id=1264033952