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Ep 119: Work and Heat: An introduction to thermodynamics (a prelude to Ch 6 of ”The Science of Can & Can’t).

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The Energy of Particles in a Room Temperature Glass of Water

In any average typical glass of water at room temperature, there will be some small number of water molecules in your glass of water that have the lowest possible energy they could have. That corresponds to energy at or very close to what would be regarded as zero Kelvin. As the temperature of the water rises, a greater and greater proportion of the molecules of the water molecules begin to occupy those higher energy states - hence more of them are turning into gas. Achieving escape velocity from the rest of the liquid, that's why evaporation tends to increase as the water increases in temperature.

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