http://njit.mrooms.net/file.php/16756/Images_Chem_126_/equilibrium_20calculation_20harder.gif

ok so i got the answers right. x=.86 y=2.58 and z=1.72 and equillibrium # of moles of hydrogen is 1.42..I need to find the equilibrium constant Keq. I know that Keq= concentration of moles of products raised to the coefficient/ concentration of reactants raised to whatever coefficient. First I divided mols by liters to get concentrations. Then I used the ammonia produce (1.72) & divided that by my concentrations. So it looked like this. 1.72/[N2][H2]^3 The answer is wrong what am I doing wrong?

Question

http://njit.mrooms.net/file.php/16756/Images_Chem_126_/equilibrium_20calculation_20harder.gif

ok so i got the answers right. x=.86 y=2.58 and z=1.72 and equillibrium # of moles of hydrogen is 1.42..I need to find the equilibrium constant Keq. I know that Keq= concentration of moles of products raised to the coefficient/ concentration of reactants raised to whatever coefficient. First I divided mols by liters to get concentrations. Then I used the ammonia produce (1.72) & divided that by my concentrations. So it looked like this. 1.72/[N2][H2]^3 The answer is wrong what am I doing wrong?