The number of moles of iron in 5.22 x 10^22 atoms can be calculated using Avogadro's number, which is 6.022 x 10^23 atoms per mole.

Divide the given number of atoms by Avogadro's number to find the number of moles:

(5.22 x 10^22 atoms) / (6.022 x 10^23 atoms/mole) = 0.0866 moles

Therefore, there are approximately 0.0866 moles of iron in 5.22 x 10^22 atoms of iron.