Question

33. If pressure on the one mole gas is 2Nm2 produced 3m volume change and enthalpy of
system is 9 J/mole the internal energy of system is
(a) 12 J/mole
(b) 6 J/mole
(c) 3 J/mole
(d) 9 J/mole​

Answer 1

Answer:

Q=∆U+ P∆V

9=∆U+2×3

9-6=∆U so

∆U= 3j/mole