One mole of h2og at 100 atm and 100degc occupies a volume

Question

One mole of H₂O(g) at 1.00 atm and 100.°C occupies a volume of 30.6 L. When one mole of H₂O(g) is condensed to one mole of H₂O(l) at 1.00 atm and 100.°C, 40.66 kJ of heat is released. If the density of H₂O(l) at this temperature and pressure is 0.996 g/cm³, calculateΔEfor the condensation of one mole of water at 1.00 atm and 100.°C.