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There is a block of ice which weighs 1.0 kg, and has a temperature of 0 degree Celsius. How much heat will it take to melt and evaporate the ice in a room where there is plenty of ventilated cool, dry air at just above 0 degree Celsius.

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Multiply the heat of fusion (80 kcal/kg) by the mass of ice.

80*1kg?

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