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When 8.721 x 10-1 mol of NH3 and 8.721 x 10-1 mol of O2 are introduced...

When 8.721 x 10-1 mol of NH3 and 8.721 x 10-1 mol of O2 are introduced into a 1.291 L reaction vessel at a certain temperature a chemist finds that at equilibrium the N2 concentration is 2.301 x 10-1 M:

4NH3(g) + 3O2(g) <==> 2N2(g) + 6H2O (g)

What is the value of Kc for this reaction ?

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