Write the chemical formulae of () sodium carbonate (ii) calcium sulphate?

Write the chemical formulae of Calcium carbonate .

Write the chemical formulae of : Sodium phosphate

Write the chemical formula of sodium zeolite.

Write the chemical formulae of (i) Barium chloride (ii) Magnesium sulphate (iii) Sodium sulphate (iv) Ammonium nitrate (v) Calcium phosphate (vi) Potassium dichromat

Write the chemical formulae of calcium oxide

Write the chemical formulae of : Calcium nitrate

Write the formula of sodium carbonate.