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15 March, 06:46

How many grams are in a sample of KOH with 5.34 x 10^24 molecules?

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  1. 15 March, 06:57
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    Mass of KOH = 497.78 g

    Explanation:

    Given data

    mass of KOH = ?

    number of KOH molecules = 5.34 * 10²⁴

    molar mass of KOH = 56.12 g/mol

    Solution

    1st we find out the number of moles of KOH

    number of moles = number of molecules given / Avogadro number

    number of moles of KOH = 5.34 * 10²⁴ / 6.022 * 10²³

    number of moles of KOH = 8.87 mol

    Now we find out the mass of KOH

    Mass of KOH = moles * molar mass

    Mass of KOH = 8.87 mol * 56.12 g/mol

    Mass of KOH = 497.78 g
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