Suppose that an inch (2.54 cm) of rain falls over a square mile of ground (2.59 × 106 m²). (Density of water is 1.0 g/cm³.) The enthalpy of vaporization of water at 25°C is 44.0 kJ/mol. How much energy is transferred as heat to the surroundings from the condensation of water vapor in forming this quantity of liquid water? (The huge number tells you how much energy is “stored” in water vapor and why we think of storms as such great forces of energy in nature. It is interesting to compare this result with the energy given off, 4.2 × 10⁶ kJ, when a ton of dynamite explodes.)