Carbon disulfide is prepared by heating sulfur and charcoal

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Question- Carbon disulfide is prepared by heating sulfur and charcoal. The chemical equation is S2(g) + C(s)= CS2(g). KC=9.40 at 900K.

1) How many grams of CS2(g) can be prepared by heating 10.9 moles of S2(g) with excess carbon in a 5.80 L reaction vessel held at 900 K until equilibrium is attained?

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