Energy has to be added to liquid water to make it evaporate. This is the so-called enthalpy of vaporization, which can be calculated here. This energy input doesn't increase the temperature of the water (vapour).
The amount of water has to be specified in mole or as a mass. A specification as volume is not possible, because volume changes with temperature. Please enter the amount of water and the temperature of it in kelvin, degrees Celsius or Fahrenheit. The enthalpy of vaporization will be calculated in joule or kilojoule.
Example: to evaporate one kilogram of water at a temperature of 20 degrees centigrade, an energy input of 2454 kilojoules is needed.
No responsibility is taken for the correctness of this information.
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