# What quantity of heat is necessary to convert 50 g of ice at 0 degrees C into steam at 100 degrees C?

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The heat of fusion of ice is 80 cal/g., the heat of vaporization of water is 540 cal/g., and the specific heat of water is 1 cal/g.*degrees C.

The heat of fusion of ice is 80 cal/g., the heat of vaporization of water is 540 cal/g., and the specific heat of water is 1 cal/g.*degrees C.

##### 1 Answer

The amount of heat required is 36 kcal.

There are three separate heats involved in this problem:

#q_1# = heat required to melt the ice to water at 0 °C#q_2# = heat required to warm the water from 0 °C to 100 °C#q_3# = heat required to convert the water to steam at 100 °C