The internal energy of a compressed gas is less than that of the rarified
The internal energy of a compressed gas is less than that of the rarified gas at the same temperature. Why?
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The internal energy of a compressed gas is less than that of rarified gas at the same temperature because in compressed gas, the mutual attraction between the molecules increases as the molecules comes close. Therefore, potential energy is added to internal energy and since potential energy is negative, total internal energy decreases.
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