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Balanced equation: A(g) + B(s) <--> 2D(g) When 3.0 mol of A and 2.00 mol of...

Balanced equation: A(g) + B(s) <--> 2D(g)

When 3.0 mol of A and 2.00 mol of B are placed in a 2.50 L reaction vessel and allowed to come to equilibrium, 2.65 mol of D was found to be present. What is Kc?

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