14. Which relationship is correct? (A)(\( \partial \)T/\( \partial \)V)S = -(\( \partial \)P/\( \partial \)S)V (B)(\( \partial \)T/\( \partial \)P)S = -(\( \partial \)V/\( \partial \)S)P (C)(\( \partial \)S/\( \partial \)V)T = -(\( \partial \)P/\( \partial \)T)V (D)(\( \partial \)S/\( \partial \)P)T = (\( \partial \)V/\( \partial \)T)P (E)none of the above.

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.

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