When 0.08 moles of ammonium sulfate

((NH4)2SO4) are dissolved in enough water
to make 298 milliliters of solution, how many
ammonium ions are present?

1 answer

0.08 mols (NH4)2SO4 contains 0.08*2 mols NH4^+. There are 6.02E23 ions in a mole of ions. You do the math.