Which has more atoms: 3.0 g iron, Fe, or 2.0 g of sulfur, S?

1 answer

Calculate mols of each.
mols Fe = 3.0/atomic mass Fe.
mols S = 2.0/atomic mass S.
The one with more mols will have more atoms since 1 mol of each material will have 5.02 x 10^23 atoms.