Final answer:
The number of atoms in 3 moles of sulfur is greater than the number of molecules in 2 moles of iron sulfide.
Step-by-step explanation:
The number of atoms in 3 moles of sulfur is greater than the number of molecules in 2 moles of iron sulfide.
To determine the number of atoms in 3 moles of sulfur, we can use Avogadro's number. Avogadro's number tells us that 1 mole of any substance contains 6.022 × 10^23 particles (atoms or molecules). Therefore, 3 moles of sulfur would contain 3 x 6.022 × 10^23 atoms of sulfur.
On the other hand, to determine the number of molecules in 2 moles of iron sulfide, we need to know the formula of iron sulfide. The molecular formula of iron sulfide is Fe2S. This means that each molecule of iron sulfide contains 2 atoms of iron and 1 atom of sulfur. To calculate the number of molecules, we can multiply the number of moles by Avogadro's number and then divide by the number of atoms per molecule. So, 2 moles of iron sulfide would contain 2 x (6.022 × 10^23) / 3 = 4.014 × 10^23 molecules of iron sulfide.