An expansion process on a diatomic ideal gas , has a linear path between the initial and final coordinates on a pV diagram. The coordinates of the initial state are: the pressure is 300 kPa, the volume is 0.060 m3, and the temperature is 390 K. The final pressure is 150 kPa and the final temperature is 260 K. Tthe work done by the gas is closest to? a) 4500j b) 2300j c) 3400j d) 5600j e)6800j