Question

Calculate the molar mass of i) Sodium oxide ii) Ammonia.

(Given, the atomic mass of Sodium = 23u, Oxygen=16u, Nitrogen=14u

and Hydrogen=1u) ​

Answer 1

Answer:

1.Molecular mass of HNO 3

is the sum of the atomic masses of H,NO

So 1+14+16×3=63 u.

Explanation:

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Answer 2

Answer:

(i) molar mass of sodium oxide(Na2O) is 62g/mol

(ii)molar mass of ammonia(NH3) is 17g/mol

Explanation:

(i) Formula: Na2O

2x23 + 1x16

=46+16=62g/mol

(ii)Formula: NH3

14+3x1=17g/mol