To determine the number of atoms present in a given amount of a substance, you can use Avogadro's constant, which is approximately 6.022 × 10^23 atoms/mol.
Since you have two moles of iron (Fe), you can multiply the number of moles by Avogadro's constant to find the number of atoms:
Number of atoms = 2 moles × Avogadro's constant
Number of atoms = 2 × 6.022 × 10^23 atoms/mol
Number of atoms = 1.2044 × 10^24 atoms
Therefore, there are approximately 1.2044 × 10^24 atoms present in two moles of iron.