# Why does water evaporate in a vacuum?

In a vacuum, water evaporates like in dry air (this is why sweating cools you in dry hot weather). Evaporation is independent of any other gas molecules that happen to be around. read more

Source: quora.com

Vacuum evaporation is the process of causing the pressure in a liquid-filled container to be reduced (create a vacuum with the liquid already in the container) below the vapor pressure of the liquid, causing the liquid to evaporate at a lower temperature than normal. read more

Source: quora.com

The specific heat of water is 4.2 kJ/kgK Hence, evaporating 1 gram of water can cool 2270/4.2 = 540 grams of water by 1°K, or 5.4 grams by 100°K which is about the difference between room temperature and water (de)sublimation temperature in space. read more

Vacuum evaporation is the process of causing the pressure in a liquid-filled container to be reduced below the vapor pressure of the liquid, causing the liquid to evaporate at a lower temperature than normal. read more

In a vacuum, water evaporates like in dry air (this is why sweating cools you in dry hot weather). Evaporation is independent of any other gas molecules that happen to be around. In humid air (100% humidity), there is an equilibrium between vapor and liquid. read more

Source: quora.com

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