As its volume is doubled from an initial value of 0.088 m3, a sample of gas is held at a constant pressure of 3.4 × 104 Pa by heating. Then, while a constant volume is maintained, the gas is cooled back to its initial temperature. The work that the gas does on the environment during the entire process is most nearly
6.0 × 103 J
3.0 × 103 J
−3.0 × 103 J
−6.0 × 103 J