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Steam is the gaseous phase of dihydrogen oxide, or water. When water boils, the steam vapor expands and can be used to provide mechanical force in a steam engine. |
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Steam is the gaseous phase of water. At standard atmospheric pressure, water boils and turns to steam at 100 degrees Celsius. As a gas, steam occupies about sixteen hundred times the volume of water, and that expansion can be converted into a mechanical force and harnessed to provide useful energy in a steam engine. |
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