Heat of Phase Transitions and Heat Capacities?

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Calculate the heat required to convert 18.9 g of propyl alcohol, C3H8O, from a solid at -141°C into the gaseous state at 113°C. The normal melting and boiling points of this substance are -127°C and 97°C, respectively. The heat of fusion is 86.2 J/g, and the heat of vaporization is 694 J/g. The specific heats of the solid, liquid and gaseous states are, respectively, 2.36, 2.83 and 1.76 J/g/K.
 
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