To calculate the number of atoms present in 8.00 moles of chlorine, we can use Avogadro's number, which is approximately 6.022 x 10^23 atoms per mole.

Number of atoms = Number of moles × Avogadro's number

Number of atoms = 8.00 moles × 6.022 × 10^23 atoms/mole

Number of atoms = 4.818 × 10^24 atoms

Therefore, there are approximately 4.818 × 10^24 atoms present in 8.00 moles of chlorine.