Question

9. (a) Calculate molecular mass of following compounds
(1) CH06.

(II) CO2
​

Answer 1

Explanation:

We need to find the molecular mass of carbon dioxide

Molecular mass ofCO2= Molecular mass of carbon + 2 (Molecular mass of oxygen) { 2 atoms of oxygen are present)

Molecular mass of carbon = 12

Molecular mass of oxygen= 16

molecular mass of CO2 = 12 + (16 X 2)

= 12 + 32

= 44 g

Mass of 1 mole (6.023 X 1023 molecules) of CO2 is about 44g.