How many moles of ammonium ions and how many moles of sulfate ions are contaiuned in a 0.400 mile sample of (NH4)2SO4?

Question

Referring to the 0.400 mole sample of (NH4)2SO4 on the previous page, how many atoms of N,H,O, and S, are contained in this sample?

Answer 1

How many moles of ammonium ions and how many moles of sulfate ions are contaiuned in a 0.400 mile sample of (NH4)2SO4
0.400 mol (NH4)2SO4 x [2 mols NH4^+/1 mol (NH4)2SO4] = ?
0.400 mol (NH4)2SO4 x [1 mol SO4^2-/1 mol (NH4)2SO4] = ?

Referring to the 0.400 mole sample of (NH4)2SO4 on the previous page, how many atoms of N,H,O, and S, are contained in this sample?
Follow the template above but here is the O atom part
0.400 mols (NH4)2SO4 x [(4 mols O atoms/1 mol (NH4)2SO4] = ?

Answer 2

132 mol