7. About the thermodynamic equation, which of the following is correct, (A)T = (\( \partial \)U/\( \partial \)S)V (B)T = (\( \partial \)H/\( \partial \)S)V (C)T = (\( \partial \)A/\( \partial \)S)V (D)T = (\( \partial \)G/\( \partial \)S)V (E)none of above is correct

8. About ideal gas, (A)An ideal gas is an assemblage of volumeless noninteracting particles which obeys the ideal gas law, PV = RT. (B)The internal energy of an ideal gas arises solely from the translational motions of the gas particles and hence is a function only of temperature, (C)The enthalpy of an ideal gas is a function only of temperature, (D)The internal energy U is constant with respect to the gas volume, i.e. (dU/dV)T = 0, hence the pressure P can be expressed as P = (dS/dV)T, (E)The above are all correct.

7. About the thermodynamic equation, which of the following is correct,
(A)T = (\( \partial \)U/\( \partial \)S)_V
(B)T = (\( \partial \)H/\( \partial \)S)_V
(C)T = (\( \partial \)A/\( \partial \)S)_V
(D)T = (\( \partial \)G/\( \partial \)S)_V
(E)none of above is correct

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