Two moles of helium gas (gamma=(5)/(3)) at 27^(@)Cisexpanded at constant pressure until its volume is doubled. Then it undergoes an adiabatic change until the temperature returns to its initial value. The work done during adiabatic process is ________ (universal gas constant = 8.3 "J mol"^(-1)K^(-1))

Two moles of helium gas (gamma=(5)/(3)) at 27^(@)Cisexpanded at consta

1.	Two moles of helium gas (gamma=(5)/(3)) at 27^(@)Cisexpanded at constant pressure until its volume is doubled. Then it undergoes an adiabatic change until the temperature returns to its initial value. The work done during adiabatic process is ________ (universal gas constant = 8.3 "J mol"^(-1)K^(-1))
Answer» 7470 J 7070 J 4770 J 4077 J ANSWER :A