試題詳解

27. A sample containing 3.00 moles of a monatomic ideal gas is taken from state X (P_X = 1.00 atm, V_X=5.0 L) to state Y (P_Y = 1.00 atm, V_Y = 35.0 L). For this process, assuming that the external pressure is constant and equals the final pressure of the gas. Which of the following statements is correct? (gas constant R = 8.314 J·mol^-1.Kl^-1)
(A)This is an adiabatic process.
(B)The process is isothermal.
(C)AE (the change of internal energy) = -4.56 kJ
(D)AH (the change of enthalpy) = 7.60 kJ
(E)The work of 3.04 kJ flows into the system.