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23 Nov 2019
The quantity of heat Q that changes the temperature ?T of a mass mof a substance is given by Q = mc?T, where c is the specific heatcapacity of the substance. For example, for H20, c = 1 cal/g°C. Andfor a change of phase the quantity of heat Q that changes the phaseof a mass m is Q = mL, where L is the heat of fusion or heat ofvaporization of the substance. For example, for H20 the heat offusion is 80 cal/g or 80 kcal/kg, and the heat of vaporization is540 cal/g or 540 kcal/kg. Use these relationships to determine thenumber of calories to change
The quantity of heat Q that changes the temperature ?T of a mass mof a substance is given by Q = mc?T, where c is the specific heatcapacity of the substance. For example, for H20, c = 1 cal/g°C. Andfor a change of phase the quantity of heat Q that changes the phaseof a mass m is Q = mL, where L is the heat of fusion or heat ofvaporization of the substance. For example, for H20 the heat offusion is 80 cal/g or 80 kcal/kg, and the heat of vaporization is540 cal/g or 540 kcal/kg. Use these relationships to determine thenumber of calories to change
