An ideal gas that is confined in piston-cylinder assembly (i. e., closed system) goes from an initial state of 1 bar at 300 K to a final state of 3 bar at 300 K by the following two-step process. Process Path.
(Step 1) Heating at constant volume, and then
( Step 2) Cooling by holding the pressure constant.

Required:
a. Determine the initial and final molar mass.
b. Illustrate the two paths on a pressure-volume diagram. Clearly label the initial and final states, process steps and the direction of each step in the diagram.