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6) A cylinder with a piston contains 0.150 mol of ideal oxygen gas at a pressure of 2.80x10' Pa and a temperature of 327 K. The gas first expands isobarically to twice its original volume. It is then compressed isothermally back to its original volume, and finally it is cooled isochorically to its original pressure. (a) Show the series of processes on a pl diagram. (b) Compute the temperature during the isothermal compression. (c) Compute the maximum pressure. (d) Compute the total work done by the piston on the gas during the series of processes