Question

Write the molecular formulae of:
I. Copper oxide
2. Iron (III) chloride
3. Sodium hydroxide
4. Iron (II) sulphide
5. Lead (II) oxide
6. Hydrogen nitrate (nitric acid)
7. Hydrogen sulphate (sulphuric acid)
8. Calcium hydroxide
9. Magnesium carbonate
10. Ammonium carbonate​

Answer 1

1 CuO

2 FeCl3

3 NaOH

4 FeS

5 PbO

6 HNO3

7 H2SO4

8 Ca(OH)2

9 MgCO3

10 (NH4)2CO3

Answer 2

Copper Oxide :- CuO

Iron (III) Chloride :- FeCl₃

Sodium Hydroxide :- NaOH

Iron (II) Sulphide :- FeS

Lead (II) Oxide :- PbO

Hydrogen Nitrate (Nitric Acid) :- HNO₃

Hydrogen Sulphate (Sulphuric acid) :- H₂SO₄

Calcium Hydroxide :- Ca(OH)₂

Magnesium Carbonate :- MgCO₃

Ammonium Carbonate :- (NH₄)₂CO₃