Calculating % of KCLO3 in a Mixture

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The discussion revolves around calculating the percentage of potassium chlorate (KClO3) in a mixture with potassium chloride (KCl). Given a 12.00g sample that produces 9.00g of KCl after heating, the percentage of KClO3 can be determined using stoichiometry. The balanced chemical equation for the reaction is 2 KClO3 → 2 KCl + 3 O2, which indicates that 2 moles of KClO3 yield 2 moles of KCl. The final calculation shows that the percentage of KClO3 in the original mixture is 25%.

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td04
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I had this wuestion last week for homework and didnt get the answer because i was not at school today. Any help would be greatly appreciated

A 12.00g sample of a mixture of KCLO3 and KCL is heated until all the oxeyen has been removed from the sample. The product, entirely KCL, has a total mass of 9.00g. What is the percentage of KCLO3 in the orignal mixture?

(The 3 in KCLO3 is a subscript)
 
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Write out a balanced equation.
 

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