Answer
There are $0.0867$ $mole$ $(Fe)$ in $5.22 \times 10^{22}$ atoms of $Fe$
Work Step by Step
1. State the data and objective:
$5.22 \times 10^{22}$ atoms of $Fe$
Objective: Number of Fe moles.
2. Identify the conversion factor.
Using Avogadro's number:
1 mole $(X)$ $= 6.02 \times 10^{23}$ $(X)$ $atoms$
$\frac{1 mole (X)}{6.02 \times 10^{23} atoms (X)}$ and $\frac{6.02 \times 10^{23} atoms (X)}{1 mole (X)}$
3. Use the conversion factor and the data to calculate the number of Fe moles:
$5.22 \times 10^{22} atoms (Fe) \times \frac{1 mole (Fe)}{6.02 \times 10^{23} atoms (Fe)} = 0.0867mole(Fe)$
