Use stoichiometry to calculate the moles of O2 produced when 6.4 moles of KClO3 decompose. Multiply 6.4 moles of KClO3 by the mole ratio between KClO3 and O2 in the balanced equation, so that moles KClO3 cancel, leaving moles O2. When 6.4 moles of KClO3 decompose, 9.6 moles of O2 are produced.
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Answer:
Use stoichiometry to calculate the moles of O2 produced when 6.4 moles of KClO3 decompose. Multiply 6.4 moles of KClO3 by the mole ratio between KClO3 and O2 in the balanced equation, so that moles KClO3 cancel, leaving moles O2. When 6.4 moles of KClO3 decompose, 9.6 moles of O2 are produced.