Equilibrium Constants

a) Determine the value for the equilibrium constant if there are present at equilibrium 5.0mol of Nitrogen, 7.0 mol Oxygen, and 0.10 mol NO2 in a 1.5 L vessel.

N2 + O2 --> 2NO2

b) Determine the value for the equilibrium constant for the reaction A+ B --> 2C, if 1.0 mol A, 1.4 mol B, and 0.50 mol C are places in a 1.0 L vessel and allowed to come to equilibrium. The final concentration of C is 0.75M.

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...concentration (Molarity) = # moles of the gas divided by the Volume of the gases (L)
[N2] = 5.0 mol / 1.5L = 3.3M
[O2] = 7.0 mol / 1.5L = 4.6M
[NO2] = ...