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24 December, 11:10

What is the mass of 5.30*1021 platinum atoms?

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  1. 24 December, 13:15
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    (5.08 * 10^21) / (6.022 * 10^23) = 0.0084357 moles * 195.084 g/mol = 1.65 g Atomic mass of platinum = 195.084 g/mol Avogadro's number = 6.022 * 10^23 so here you go
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