Consider the following figure. (The x axis is marked in increments of 0.25 m³.) P (Pa) 6 x 106 4 x 106 2 x 106 V (m³) (a) Determine the work done on a gas that expands from i to f as indicated in the figure. -12 The work done in performing an infinitesimal volume change is -PAV. How do you determine the work done from a pressure versus volume graph? MJ (b) How much work is performed on the gas if it is compressed from f to i along the same path? 12 You appear to have given the correct answer using your incorrect result from part (a). MJ