(PLEASE answer with the right answers and don't just try and get the points) Answer each one to get 50 points. this is a risk but I really need this question. oh right and thank you to whoever answers! ^>^

Amixture initially contains a, b, and c in the following concentrations: [a] = 0.300 m , [b] = 1.05 m , and [c] = 0.550 m . the following reaction occurs and equilibrium is established: a+2b⇌c at equilibrium, [a] = 0.140 m and [c] = 0.710 m . calculate the value of the equilibrium constant, kc.