Question

In a process, 701 J of heat is absorbed by a system and 394 J of work is done by the system. What is the change in the internal energy for the process?

Predict the change in the internal energy for the isolated system at the constant volume.

How is the internal energy of a system affected when (a) Heat passes into or out of a system? (b) Work is done by or on the system

(a) Two litres of an ideal gas at a pressure of 10 atm expands isothermally into a vacuum until its total volume is 10 litres. How much heat is absorbed and how much work is done in the expansion? (b) Consider the same expansion, but this time against a constant external pressure of 1 atm. (c) Consider the same expansion, to a final volume of 10 litres conducted reversibly.