This is extemely important to me! In an isolated system of a very large box half filled with water, a small soaked sponge is placed just above the surface of the water. Will the sponge eventually dry? At first I thought not. But the molecules in the vapour above the water might have a higher temperature than the water itself because they have all managed to reach the escape velocity to evaporate. This indicates that the sponge with a greater surface area to water mass in comparison to the body of the water might also be warmer and eventually dry because of this. Thanks very much if you can help.