Physics Question?

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The quantity of heat Q that changes the temperature ?T of a mass m of a substance is given by Q = mc?T, where c is the specific heat capacity of the substance. For example, for H20, c = 1 cal/g X Co. And for a change of phase, the quantity of heat Q that changes the phase of a mass m is Q = mL, where L is the heat of fusion or heat of vaporization of the substance. For example, for H20, the heat of fusion is 80 cal/g (or 90 kcal/kg) and the heat of vaporization is 540 cal/g (or 540 kcal/kg). Use these relationships to determine the number of calories to change (a) 1 kg of 0oC ice to 0oC ice water, (b) 1 kg of 0oC ice water to 1 kg of 100oC boiling water, (c) 1 kg of 100oC boiling water to 1 kg of 100oC steam, and (d) 1 kg of 0oC ice to 1 kg of 100oC steam.
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