Write the molecular formula of the following:
(a) Sodium Carbonate
(b) Zinc Sulphide Ferric
(c) Aluminum Oxide
(d) Sulphate Magnesium
(e) Barium Chloride
Answers
Explanation:
a) Na2CO3
b) ZnS
c) Al2O3
d) MgSO4
e) BaCl2
Answer:
The molecular formula of the following compounds:
Sodium carbonate - Na₂CO₃
Zinc Sulphide - ZnS
Aluminium Oxide - Al₂O₃
Sulphate Magnesium - MgSO₄
Barium Chloride - BaCl₂
Explanation:
a) Sodium Carbonate
Sodium has the chemical symbol of Na and a valency of 1.
Carbonate has the molecular formula of CO₃ and a valency of 2
The molecular formula of Sodium carbonate is Na₂CO₃
b) Zinc sulphide
Zinc has the symbol of Zn and a valency of 2
Sulphide has the chemical symbol of S and a valency of 2
The molecular formula of Zinc sulphide is Zn₂S₂ simplified to ZnS
c) Aluminium oxide
Aluminium has the chemical symbol of Al and a valency of 3
Oxygen has the chemical symbol of O and a valency of 2
The molecular formula of Aluminium oxide is Al₂O₃
d) Magnesium sulphate
Magnesium has the chemical symbol of Mg and a valence of 2
Sulphate has the molecular formula of SO₄ and a valency of 2
The molecular formula of magnesium sulphate is MgSO₄
e) Barium Chloride
Barium has the chemical formula of Ba and a valency of 2
Chlorine has the chemical symbol of Cl and a valency of 1
The molecular formula of Barium chloride is BaCl₂