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2KClO3 ----> 2KCl + 3O2

Calculate the number of grams of KClO3 decomposed given an initial sample mass of 2.16g and a residue mass of 1.71g?

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Here is a KClO3 worked example. Just follow the steps.
http://www.jiskha.com/science/chemistry/stoichiometry.html

5.48 litres

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