Question

A gas contained in a cylinder is compressed, the work required for compression being 5000 kj. During the process, heat interaction of 200 kj causes the surroundings to be heated. The change in internal energy of the gas during the process is

Answer 1

Answer:- Change in internal energy is 4800kj.

Solution:- Compression of the gas is taking place, means the work is done on the system and so the sign of w would be positive.

w = 5000 kj

200 kj of heat causes the surroundings to be heated means the heat is lost by the system and so the sign of q would be negative.

q = -200 kj

The formula for calculating the internal energy is:

$\Delta E=w+q$

Let's plug in the values:

$\Delta E=5000kj-200kj$

\Delta E=4800kj[/tex]

So, the change in internal energy of the gas during the process is 4800kj.