Answer
Please see the work below.
Work Step by Step
We know that
$4.9g\space Fe\times \frac{1.1\times 10^{22}Fe\space atoms }{1.0g\space Fe}=5.4\times 10^{22}Fe\space atoms $
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.