For the reaction
N2 (g) + 3H2 (g) ⇌ 2NH3 (g)
what is the value of Kc at 500°C if the equilibrium concentrations are as follows: [H 2] = 0.30 M, [N2] = 0.40 M, and [NH3] = 2.2 M?
Express the equilibrium constant to two significant figures.
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