3. The vapor pressure of an unknown solid is approximately given by In(P/Torr) = 22.719 -2065(K/T), and the vapor pressure of the liquid phase of the same substance is approximately given by In (P/Torr) = 21.175 - 1866(K/T). a. Calculate delta H of vaporization and delta H of sublimation b. Calculate delta H of fusion c. Calculate the triple point pressure and temperature.