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On process 3 the gas expands at constant pressure from initial volume 1.00 m^3 to a final volume of 3.00 m^3.
On process 3 the gas expands at constant pressure from initial volume 1.00 m^3 to a final volume of 3.00 m^3. On process 4 the gas is heated at constant volume from an initial pressure of 106 kPa to a final pressure of 212 kPa .