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9 November, 04:15

The mass of a solid copper penny is 3.46 g. how many copper atoms are in the penny?

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  1. 9 November, 07:38
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    3.46 g Cu 1 mol Cu 6.02*10^23 atoms Cu =

    63.55 g Cu 1 mol Cu

    3.28*10^22 atoms Cu
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