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For the equilibrium below at 400 K, Kc=7.

Br2 (g) + Cl2 (g) -><- 2BrCl(g)
If initially .30 mol of Br2 and .30 mol Cl2 are introduced into a 1.0 L container at 400. K, what will be the equilibrium concentration of BrCl? Assume the initial product concentration is zero.

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