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You expect to have 49.2 g of KCl but only make 37.5 g of KCl. What is the actual yield?

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Strategy:

Use the mole ratio and find the number of moles of oxygen formed by 6 moles of potassium chlorate. 6 moles of KClO3 (735.3 grams of KClO3) produce 9 moles of O2 gas. Technically, this is the theoretical yield, but the answer becomes more useful when you convert moles to grams.

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