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3 February, 02:38

how many grams of potassium chloride, KCL (molar mass is 74.55g/mol) are produced if 25 grams of potassium chlorate KClo^3 decompose

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  1. 3 February, 03:14
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    Mass = 15.20 g of KCl

    Explanation:

    The balance chemical equation for the decomposition of KClO₃ is as follow;

    2 KClO₃ = 2 KCl + 3 O₂

    Step 1: Calculate moles of KClO₃ as;

    Moles = Mass / M/Mass

    Moles = 25.0 g / 122.55 g/mol

    Moles = 0.204 moles

    Step 2: Find moles of KCl as;

    According to equation,

    2 moles of KClO₃ produces = 2 moles of KCl

    So,

    0.204 moles of KClO₃ will produce = X moles of KCl

    Solving for X,

    X = 2 mol * 0.204 mol / 2 mol

    X = 0.204 mol of KCl

    Step 3: Calculate mass of KCl as,

    Mass = Moles * M. Mass

    Mass = 0.204 mol * 74.55 g/mol

    Mass = 15.20 g of KCl
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