We have spent some time discussing reactions that occur in aqueous media and devoted some attention to the properties of water that make it unique. Now consider the power required

to drive the hydrologic cycle, assuming that annual global rainfall averages 1 m across the approximately 5.1 × 1014 m² of earth's surface. What is the energy required to drive the hydrologic cycle? How does this compare with incoming solar radiation and world energy consumption? Consider the following data: Latent heat of vaporization = 2465 kJ/kg for water at 15°C.In 1987 world energy consumption was estimated at 3.3 x 107 kJ Incoming sunlight absorbed at 168 W/m? at earth's surface