일반물리학 1 — Temperature, Heat, and the First Law of Thermodynamics: Problem 15

15 Ethyl alcohol has a boiling point of 78.0°C, a freezing point of -114°C, a heat of vaporization of 879 kJ/kg, a heat of fusion of 109 kJ/kg, and a specific heat of 2.43 kJ/kg·K. How much energy must be removed from 0.720 kg of ethyl alcohol that is initially a gas at 78.0°C so that it becomes a solid at -114°C?