From the following vapor pressure data for iodomethane, an estimate of the molar heat of vaporization of CH3I is kJ/mol.
P, mm Hg T, Kelvins
40.0 249
100 266
2. The normal boiling point of liquid heptane is 371 K. Assuming that its molar heat of vaporization is constant at 31.5 kJ/mol, the boiling point of C7H16 when the external pressure is 1.32 atm is K.