One mole of H20(g) at 1.00 atm and 100.Celcius occupies a volume of 30.6 L. Explain when one mole of H20(g) is condensed to one mole of H20(l) at 1.00 atm and 100. Celsius 40.66 kJ of heat is released. If the density of H20(l) at this temperature and pressure is 0.996 g/ cm3, compute the change in energy for the condensation of one mole of water at 1.00atm and 100 Celsius