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Equilibrium constant (Kc) for the reaction

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At 1130oC the equilibrium constant (Kc)for the reaction:
2H2S(g) <----->2H2(g) + S2(g)
Is 2.25 X10-4, if [H2S]=4.84 X10-3 M and [H2]=1.50X10-3 M, calculate [S2].
( need help with the following problem with the steps)

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