Why hydrogen and helium get warmed up on adiabatic expansion through porous plug c?
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Anyhow at room-temperature only 3 gasses (Helium, Hydrogen and Neon) heat up during adiabatic expansion all others cool. ... When the cold gas is expanded, the average distance between molecules is increased. This means that the molecules are pulled apart. Since they attract each other this takes energy.............................
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