Given the following data for ethylene glycol (molar mass 62.07 g/mol) at 1 atm, calculate the amount of heat (in kJ) given off when 19.36 g of gaseous ethylene glycol at 257.6 C is converted to liquid at 137.2 C at constant pressure. Measurement AHfusion AHvaporization Normal Boiling Point Normal Melting Point Cs, solid Cs, liquid Cs.gas Ethylene Glycol Data Value 9.1 kJ/mol 74.1 kJ/mol 197C -13 C 1.5 J/g C 2.7 J/g C 1.5 J/g C