試題詳解

10. Calculate the work energy, w, gained or lost by the system when a gas expands from 20 L to 35 L against a constant external pressure of 2.0 atm.[1 Lㆍ atm = 101 J]
(A)-5.3 kJ
(B) -3.0 kJ
(C) +3.0 kJ
(D) +5.3 kJ