Kinetic Molecular Theory Of Gases

A monoatomic gas has 3 degrees of freedom for translation motion.

In thermodynamics, the first law of thermodynamics is given by: where: - is the change in internal energy of the system, - is the heat absorbed by the system, - is the work done by the system. Since the gas is taken from state A to state B along two different paths, the change in internal energy, , is the same for both paths, as internal energy depends only on the initial and final states of the system, not on the path taken. Therefore, we have: This shows that the difference between the heat absorbed and the work done is the same for both paths. Thus, the correct relationship is: