Calculate the number of moles containing each of the following – 1.60 x10^22 atoms of iron, Fe.3.20

Calculate the number of moles containing each of the following – 1.60 x10^22 atoms of iron, Fe.3.20 x 10^23 molecules of carbon dioxide , CO2.7.44 x 10^24 formula units of iron(III) carbonate, FeCO3.