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Initially a mixture contains 0.629 mol each of N2 and O2 in an 6.64-L vessel. Find the composition of the mixture when equilibrium is reached at 3900°C. For the reaction below, the Kc = 0.0123 at 3900°C.

N2(g) + O2(g) <==> 2 NO(g)

[N2] (M)
[O2] (M)
[NO] (M)

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