Nitrogen gas (molecular weight 28) is enclosed in a cylinder by a piston, at the initial condition of 2 bar, 298 K and 1 m3. In a particular process, the gas slowly expands under isothermal condition, until the volume becomes 2 m3. Heat exchange occurs with the atmosphere at 298 K during this process. The work interaction for the nitrogen gas is

Nitrogen gas (molecular weight 28) is enclosed in a cylinder by a pist

1.	Nitrogen gas (molecular weight 28) is enclosed in a cylinder by a piston, at the initial condition of 2 bar, 298 K and 1 m³. In a particular process, the gas slowly expands under isothermal condition, until the volume becomes 2 m³. Heat exchange occurs with the atmosphere at 298 K during this process. The work interaction for the nitrogen gas is
A.	200 kJ
B.	138.6 kJ
C.	2 kJ
D.	200 kJ
Answer» C. 2 kJ

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