An initial mixture of nitrogen gas and hydrogen gas is reacted in a rigid container at a certain temperature as follows:
3 H2(g) + N2(g) <--> 2 NH3(g).
At equilibrium, the concentrations are [H2] = 5.8 M, [N2] = 8.9 M, and [NH3] = 5.3 M. What were the concentrations of nitrogen gas and hydrogen gas that were reacted initially?
I got 13.75 for H2 and 12 for N2