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21 January, 12:46

24 how many moles are in 2.04 * 1024 molecules of h2o?

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  1. 21 January, 16:08
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    The answer is 3.39 mol.

    Avogadro's number is the number of molecules in 1 mol of substance.

    6.02 * 10²³ molecules per 1 mol.

    2.04 * 10²⁴ molecules per x.

    6.02 * 10²³ molecules : 1 mol = 2.04 * 10²⁴ molecules : x

    x = 2.04 * 10²⁴ molecules * 1 mol : 6.02 * 10²³ molecules

    x = 2.04 / 6.02 * 10²⁴⁻²³ mol

    x = 0.339 * 10 mol

    x = 3.39 mol
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