In Order to Melt $\underline { \text { two } }$

question 139

Multiple Choice

In order to melt $\underline { \text { two } }$ grams of ice, how many calories of heat energy must be added to the ice during its phase change? (specific heat of water = 1 cal/gm; heat of fusion = 85 cal/gm)
(heat of vaporization = 585 cal/gm; heat of sublimation = 670 cal/gm)

• A) 2
• B) 170
• C) 172
• D) 1170
• E) 1340

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