A 4-mol ideal gas system undergoes an adiabatic process where it expands and does 20 J of work on its environment.What is its change in internal energy?

Question

Quizplus · Accepted Answer

The first law of thermodynamics states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system. In this case, the system is an ideal gas, which means that it has no intermolecular forces and its molecules move randomly. The process is adiabatic, which means that no heat is added to or removed from the system. The system does 20 J of work on its environment, so the change in internal energy of the system is -20 J.

A 4-Mol Ideal Gas System Undergoes an Adiabatic Process Where