Question 2: Incorrect
0.00 points out of 1.00
The quantity of heat Q that changes the temperature T of a mass m of a substance is given by Q = cmT, where c is the specific heat capacity of the substance. For example, for H2O, c = 1 cal/g°C. 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 H2O, the heat of fusion is 80 cal/g or 80 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 1.8 kg of 0°C water to 100°C boiling water.
