5. Calculate the heat (in kJ) required to transform 70.80 g of
bromine from a solid at a temperature of -7.2 °C to a gas at 92 °C.
Report your answer to one decimal place.
Molar mass of bromine, Br 2 = 159.808 g/mol
Melting point = -7.2 °C Boiling point = 59°C.
Enthalpy of fus ion = 10.57 kJ/mol
Enthalpy of vaporization = 29.96 kJ/mol.
Molar heat capacity of the liquid phase = 75.7 J/mol • K
Molar heat capacity of the gas phase= 36 J/mol • K.