Water lost to evaporation has become a central point of contention in the disagreement between California and six other states over how to divide reductions in water use.

Point out that the word “evaporate” has the word “vapor” in it—water changes to water vapor but it is still water. What are some other examples of evaporation? Students may think of common examples of ...

For example, hexane (which has a relatively high boiling point of 69 °C) readily evaporates at room temperature due to a very small enthalpy of vaporization (31.5 kJ/mol @ 25 °C) and high vapor ...

Evaporation is being used to get rid of Piney Point's nutrient-rich water Depending on the time of the year, officials say the evaporation system can remove 200,000 gallons of water on a single day.

Warm air requires more water vapor than cool air to reach its saturation point, which is why an 85°F afternoon can get much muggier than a day that only makes it to 50°F—the latter can still ...