2. Heat energy of 743 J is needed to raise the temperature of 5 moles of an ideal gas by 2 K at constant pressure. How much heat is needed to raise the temperature of the same mass of the gas by 2 K at constant volume?
(A) 826 J,
(B) 743 J,
(C) 660 J,
(D) 600 J,
(E) 545 J.

答案：登入後查看
統計： A(0), B(0), C(3), D(0), E(1) #2789552