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That is, water has a high heat of vaporization, the amount of energy needed to change one gram of a liquid substance to a gas at constant temperature. Waterâs heat of vaporization is around 540 cal/g at 100 Â°C, water's boiling point. Note that some molecules of water â ones that happen to have high kinetic energy â will escape from the surface of the water even at lower temperatures.
Reduce evaporation from your pool Pool water fact: With more than 300,000 pools in Arizona, the water lost to evaporation each year is significant. The average pool contains 10,000 to 15,000 gallons of water and evaporates its entire contents each year. Liquid pool covers