Equilibrium

[microcist]

i need help. on this problem.
A rigid vessel is divided by a partition into two compartments. One side contains 5 moles of O2 at 1 atm and the other contains 10 moles of N2 at 1 atm. The partition is then removed and no heat passes to or from the surroundings. describe what happens and calculate the entropy for the system and the universe

[Bystander]

This is covered in detail in your textbook; it is probably the most understood application of entropy by thermo text authors (translation --- authors beat this process to death, graphically, and with equations), and you have seen everything you need for the problem if you've read the chapter preceeding the problem set containing this problem --- it's a "gimme" used to identify students who read assigned materials.