2. [-/1 Points] - SERCP11 12.1.P.002. MY NOTES l ' ASK YOURTEACHER ' I PRACTICE ANOTHER Sketch a PV diagram and find the work done by the gas during the following stages. (a) A gas is expanded from a volume of 1.0 L to 4.0 L at a constant pressure of 7.0 atm. :3 (b) The gas is then cooled at constant volume until the pressure falls to 1.5 atm. :3 (c) The gas is then compressed at a constant pressure of 1.5 atm from a volume of 4.0 L to 1.0 L. (Note: Be careful of signs.) :3 (d) The gas is heated until its pressure increases from 1.5 atm to 7.0 atm at a constant volume. :3 (e) Find the network done during the complete cycle. :3