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16 June, 20:41

If 7.50 * 10^24 molecules of a substance have a mass of 454 g, what is the molar mass of the substance?

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  1. 16 June, 20:47
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    1 mol has 6,02 * 10^23 molecules.

    There are (7,50 * 10^24) / (6,02 * 10^23) = 12,458 moles.

    Molar mass 454/12,458 = 36,44 g/mol.
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