Determine the Formulas for the following ionic

Determine the Formulas for the following ionic compounds:
Aluminum Sulfide
Sodium Oxide
Calcium Chloride
Calcium Chloride
Iron (III) Bromide
Iron (II) Bromide
Copper (II) Sulfate
Copper (II) Sulfate
Copper (I) Nitrate
Copper (II) Nitride
Ammonium Chloride
Ammonium Chloride
Calcium Nitride
Potassium Phosphate
Iron (III) Acetate
Iron (III) Acetate