19.In an isothermal process, the internal energy of gas (A) decrease (B) no change (C) increase (D) unpredictable change (E) depends on the pressure

3.Which of the following statement is not the assumption of kinetic theory? (A) The gas consists of molecules of mass m in ceaseless random motion (B) The size of the molecules is negligible (C) The molecules do not interact with each other (D) The molecules make perfectly elastic collisions when they are in contact (E) Internal modes of motion are excited when molecules making collision

19.In an isothermal process, the internal energy of gas
(A) decrease
(B) no change
(C) increase
(D) unpredictable change
(E) depends on the pressure

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