Consider a container with rigid, adiabatic walls that is fitted with a partition that separates the container into two chambers (one having twice the volume of the other). The larger chamber contains a 2-mol sample of N2(g) at 298 K and 1 bar pressure, and the smaller chamber contains a 1-mol sample of He(g) at 298 K and 1 bar pressure. Now suppose that the partition between the chambers is removed and the N2 and He gases are allowed to mix. This mixing process is isothermal and also adiabatic. Assuming that the gases behave ideally, what would be the ∆U (change in internal energy), ∆H (enthalpy change), and ∆S (entropy change) that accompany this mixing process?

MCQs on thermodynamics in classical mechanics systems. Topics include the first, second, and third laws of thermodynamics, energy, work, enthalpy, and entropy, spontaneity, chemical potential, equilibrium, phase changes, and chemical kinetics.