Question

A simple gas undergoes expansion against apressure of 1 atm.from a volume of 500ml to 1000ml.by absorbtion of 500 j heat calculate cahnge in internal energy​

Answer 1

Answer:

Dear student,

According to first law of thermodynamics,

Change in internal energy = Heat flow into the system + Work done on system

= 500 + Work done.

Work done = -PdV = -1 x 1.01325 x 10⁵(1000-500) x 10-⁶ = -41 J

Change in internal energy = 500-41 = 459J