Calculate the heat required to convert 15.9 g of ethyl alcohol, C2H6O, from a solid at -130°C into the gaseous state at 102°C. The normal melting and boiling points of this substance are -117°C and 78°C, respectively. The heat of fusion is 109 J/g, and the heat of vaporization is 837 J/g. The specific heats of the solid, liquid and gaseous states are, respectively, 0.97, 2.30 and 0.95 J/g/K.
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