Question

write the chemical formulae of the following.
(a) magnesium chloride
(b) calcium oxide
(c) copper nitrate
(d) aluminium chloride
(e) calcium carbonate
note- use and show the methods of criss-crossed.​

Answer 1

Answer:

magnesium chloride- mgcl2

calcium oxide- cao2

copper nitrate- cu(nh)3

aluminum chloride- alcl3

calcium carbonate- caco3

Answer 2

Answer:

(a) the chemical formula of magnesium chloride is

Mgcl2

(b) the chemical formula of calcium oxide is

CaO

(c) the chemical formula of copper nitrate is

Cu(NO3)2

(d) the chemical formula of aluminium chloride is

AlCl3

(e) the chemical formula of calcium carbonate is

CaCO3