A pistonCylinder assembly contains 3kg or ideal gas Argon at

A piston-Cylinder assembly contains .3kg or ideal gas Argon at an inital state of 250 kPa and 300K. The Argon is expanded isothermally to 100kPa. If the system is considered to be the argon in the cylinder, find the:

1)The work done

2) The heat added

3) The change in internal energy of the argon.

Solution

The answer of following question is as follows.

The work done is 67 kj.

The heat added is 55 kj.

The internal energy is 78 kj.