Ethanol (C2H5OH) melts at —114 °C and boils at 78 et. Its density is 0.789 g/mL. The enthalpy of fusion of ethanol is 5.02 kJ/mol, and its enthalpy of vaporization is 38.56 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 j/g-K and 2.3 h/g-K, respectively, (a) How much heat is required to convert 25.0g el oi ethanol at 25 °C to the vapor phase at 78 °C? (b) How much heat is required to convert 5.00 L of ethanol at —140 °C to the vapor phase at 78 °C?
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