Question #aac3c

1 Answer
Junaid Mirza
Dec 2, 2017

#"3.011 × 10^22# iron atoms

Explanation:

Atomic mass of iron is #"56 g"#

It means mass of #6.022 × 10^23# iron atoms is #"56 g"#

In the given sample,
Number of iron atoms#= (2.8 cancel"g" × 6.022 × 10^23)/(56 cancel"g") = underline(3.011 × 10^22)#

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