Propane (C₃H₈) is one of the gases that is used as fuel gas. Propane has a normal boiling point of –42.0°C and its enthalpy of vaporization is 14.79 kJ/mol. Calculate the heat that must be added to convert 300 g of propane into vapor and determine the volume of this propane gas occupies at 765 torr and 40.0°C.