Question

write the chemical formula for by using Criss cross method.


zinc nitrate, calcium carbonate, aluminium hydroxide, ammonium hydroxide,silver nitrate, copper carbonate, potassium oxide, iron, sulphate.

Answer 1

hope it will help you

Answer 2

For writing the chemical formula we should have a knowledge of 
I) Symbol of the element
II) Valency of each atom constituting the compound

(1) Formula of calcium sulphide

Thus, the chemical formula of calcium oxide is CaS.
(2) Formula of sodium sulphate


Thus, the chemical formula of sodium sulphate is Na2(SO4)
(3) Formula of ammonium hydroxide


Thus, the chemical formula of ammonium hydroxide is NH4OH.
(4) Formula of cupric oxide


Thus, the chemical formula of cupric oxide is CuO
(5) Formula of sodium nitrate


Thus, the chemical formula of sodium nitrate is NaNO3
(6) Formula of magnesium hydroxide


Thus, the chemical formula of magnesium hydroxide is Mg(OH)2.
(7) Formula of zinc chloride


Thus, the chemical formula of zinc chloride is ZnCl2.
(8) Formula of aluminium carbonate


Thus, the chemical formula of aluminium carbonate is Al2(CO3)3.
(9) Formula of potassium phosphate


Thus, the chemical formula of potassium phosphate is K3(PO4).
(10) Formula of silver chloride


Thus, the chemical formula of silver chloride is