Ten Grams of Ice at -20°C Is to Be Changed

Multiple Choice

Ten grams of ice at -20°C is to be changed to steam at 130°C.The specific heat of both ice and steam is 0.5 cal/g . °C.The specific heat of water is 1.00 cal/g . K.The heat of fusion is 80 cal/g and the heat of vaporization is 540 cal/g.The entire process requires:

A) 750 cal
B) 1250 cal
C) 6950 cal
D) 7450 cal
E) 7700 cal