• Conversion factor s8.legal needed = (6.0221023 molecules S8 / 1 mole S8)
  
  and (8 atoms S / 1 molecule S8)
  
  calculate: 0.525 mol(6.022 10^23 molecules S8 / 1 mole S8) (8 atoms S / 1 molecule S8) = 2.529... = 2.53 x 1024 atoms of S8 (3 Sig figs)