What is molecular mass of compound having formola MO and equivalent mass20?
Answers
Answer:
Given:
Formula of the Oxide =
Equivalent mass of the metal = 9
To find:
Molecular mass of the oxide = ?
Formula to be used:
Calculation:
The valency of metal in given oxide is 3
As the equivalent weight and valency are known, atomic weight of the metal M can be calculated by the following method
Atomic weight = Equivalent weight × Valency
Atomic weight = 9× 3 = 27
∴ Atomic weight of 1 metal = 27, and for 1 oxygen = 16
As 2 atoms of metal M is involved, atomic weight of metal will be:
27×2 = 54
As 3 atoms of oxygen is involved, atomic weight of oxygen will be:
16×3 = 48
Thus the molecular mass of the oxide is
Molecular mass of oxide = Atomic weight of Metal + Atomic weight of Oxygen
Molecular mass of oxide = 54 + 48
Molecular mass of oxide = 102
Conclusion:
Thus the molecular mass of the oxide will be 102.
Learn more about molecular mass
The molecular mass of compound is 30 u. The percentage composition of carbon and hydrogen in compound is 80% and 20% respectively then the ratio of the molecular mass to the empirical formula of the compound .
Explanation:
eq mass is atomic weight divide valency
atomic weight is valency into EQ mass
i.e. 1*20
equal to 20
mass of oxygen is 16
so molecular formula is
20+16
36