its part VI) of a big problem, where:
0.12 moles of argon (40) undergoes the cycle abca described in the graph. Process ab lies on a 540k isotherm.
In the previious 5 sub problems, i figured that:
The PV diagram has points a,b and c where:
The Attempt at a Solution
So it's basically using Qabca to find the efficiecy. The thing is that im not sure what to use for the Qs.