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Determining the number of grams required by a reactant to produce a set number of grams of the product.

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Oxygen gas can be prepared in a Laboratory by the reaction:

2KClO3(s) => 2KCl(s) + 3O2(g)

How many grams of KClO3 must be reacted to produce100g of O2?

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Solution Summary

This solution uses the molecular weights of K, Cl and O to determine how many moles of KClO3 will be needed to get 100g of O2. 150 worlds.

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To do this question, all you're really concerned with is the Oxygen. Remember that everything you start with, you'll end up with in the reaction. You want 100g of O2 so ...

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