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

question 72

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

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