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How much energy is needed as heat at a pressure of 1 ATM when 78g of liquid ethanol (C2H5-OH) at 298 K is converted to solid enthalpy at 159 K (FP). The molar enthalpy fusion is -277.6 KJ/Mole, and heat capacity of liquid ethanol is 112.3 J/mole k.

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I don't get "converted to solid enthalpy"

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