(old exam problem) You have a piston-cylinder arrangement at equilibrium. Above the piston is 3 bar. There are no clamps. An ideal gas ( 2 moles) is within the cylinder at 10C. The piston-cylinder arrangement is within a large heat bath. (a) What is the volume (cm3) of the gas in the cylinder? Additional weights are added to the top of the piston equivalent to 2 bar (so now there is 5 bar above the piston) and the piston head moves down. Eventually the piston head stops moving (and that is the end of the process). (b) What is the pressure of the gas at the end of the process? How do you know? (c) What is the temperature of the gas at the end of the process? How do you know? (d) You are keen to determine the amount of heat ( J ) added to or removed from the gas at the end of the process. Write down the appropriate energy balance (time-dependent or time-independent) in its entirety and cross-out various terms (with justification) to arrive at a simplified version to use here. (e) How much work (J) was done on the system or by the system as a result of this process? (f) What is the internal energy change of the gas during this process if CV=9R/2 ? (g) What is the amount of heat added to or removed from the system in Joules? Was the heat added or removed