How many atoms of iron are there in 3.77 moles of Iron?

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1 Answer
Meave60
Dec 11, 2017

#3.77# moles of Fe contain #2.27xx"10"^24" atoms Fe"#.

Explanation:

One mole of anything is #6.022xx10^23# everythings, including atoms.

Multiply the moles Fe by #6.022xx10^23# atoms/mol.

#3.77color(red)cancel(color(black)("mol Fe"))xx(6.022xx10^23"atoms Fe")/(1color(red)cancel(color(black)("mol Fe")))=2.27xx"10"^24" atoms Fe"# rounded to three significant figures.

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