Could somebody help me with a Chemistry question?

Question

If for the reaction N2(g) + O2(g) ↔ 2NO(g), you have the initial concentration [N2] = 0.03 and [O2] = 0.08, and if Keq for the reaction at this temperature is 5.7 x 10^-7, then what are the equilibrium concentrations for N2, O2, and NO2?

Answer 1

Solve ((2x) squared)/(0.03 - x)(0.08 - x) = Keq and you are well on your way!