Thermodynamics help in finding Temp, Volume and Pressure

[Jeremy Stone]

Hey Guys!

I need some help for solving question 2 of this example as my HSC exam is in 5 days and I want to be able to solve this question if I receive it on the paper.

Question:

Graph:

Answer for Q1 (Just the formula) :

Work I have done towards this question:

I have realized that from 1-2, there is an increase in pressure, decrease in volume and increase in temperature I have realized that from 4-1, there is an decrease in pressure, constant volume and decrease in temperature I have realized that from 3-4, there is an decrease in pressure, increase in volume and decrease in temperature I am not sure where to go from here and what values to substitue in

 

[Chestermiller]

Step 1: Label on the diagram all the temperatures, pressures, and volumes that you know.

Step 2: Is there any point on the diagram that you know all three? If so, you can calculate the number of moles of working fluid.