Consider the following figure. (The x axis is marked in increments of 2.5 m3.) P (Pa) 6 x 106 4x 106 2x 106 V (m) (a) Determine the work done on a gas that expands from i to f as indicated in the figure. MJ (b) How much work is performed on the gas if it is compressed from f to i along the same path? MJ

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