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The specific heat of liquid ethanol, C2H5OH(l), is 2.46 J/g•°C and the heat of vaporization is 39.3 kJ/mol. The boiling point of ethanol is 78.3°C. The molecular weight of ethanol 46 g/mol. What amount of enthalpy is required to heat 50.0 g of liquid ethanol from 23.0°C to ethanol vapor at 78.3°C?
1) 42.7 kJ
2) 49.5 kJ
3) 179 kJ
4) 1970 kJ
5) 6840 kJ
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