Using a PV diagram

1
Using a P-V diagram Consider a monatomic ideal
gas, that begin at an initial pressure and volume
of 200 kPa and 0.01 m3 . The pressure and the
volume of the gas are reduced as shown in the P-V
diagram, to a final pressure and volume of 100
kPa and 0.005 m3.
P, kPA
200
100
V, m3
What are Won, Qin, and DEint for this process?
.005
0.01
CT18.2
? Area under curve
Area of rectangle Area of Triangle
0.75 kJ
0.75 kJ
Dont forget the First Law!
2.25 kJ (0.75 kJ) 3.0 kJ
2.25 kJ
Was heat added or removed during this process?