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22-10-2016
Chemistry

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how many atoms are in a solid piece of iron that has a mass of 24.0g?

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Willchemistry Willchemistry

23-10-2016

Atomic mass iron ( Fe ) = 55.84 a.m.u

55.84 g ------------ 6.02x10²³ atoms
24.0 g ------------- ??

24.0 x ( 6.02x10²³) / 55.84

=> 2.58x10²³ atoms

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