Question

13. What is the proportion of elements present in the following compounds?

1) H2o
(2) Co2
3)CaO
4) NO2

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Answer 1

Compounds Elements Proportion of elements

(a) H

2

O H : O 1 : 8

(b) CO

2

C : O 3 : 8

(c) CaO Ca : O 5 : 2

(d) NO

2

N : O 7 : 16

Answer 2

Answer

Compounds Elements Proportion of elements

(a) H

2

O H : O 1 : 8

(b) CO

2

C : O 3 : 8

(c) CaO Ca : O 5 : 2

(d) NO

2

N : O 7 : 16

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