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11 October, 03:06

How many atoms of gold are in 54.5 grams?

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  1. 11 October, 04:28
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    1.67x10^23 atoms

    Explanation:

    From Avogadro's hypothesis, 1mole of any substance contains 6.02x10^23 atoms.

    This means that 1mole of gold contains 6.02x10^23 atoms.

    1 mole of gold = 197g

    197g of gold contains 6.02x10^23 atoms.

    Therefore, 54.5g of gold will contain = (54.5 x 6.02x10^23) / 197 = 1.67x10^23 atoms
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