Question

2.Which of the following represents the formula
of a substance which contains about 26%
nitrogen and 74% oxygen?
1) N20
2) NO 3) NO24) N205​

Answer 1

Answer:

N20

Explanation:

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Answer 2

Answer:

Given, % N in compound =26%,

% O in compound =74%,

So, mass of nitrogen in 1 mole=

100

26

×108≈28 g

Mass of oxygen in 1 mole=

100

74

×108≈80 g

So, no. of moles of nitrogen =

14

28

=2 moles

No. of moles of nitrogen =

16

80

=5 moles

So, the molecular formula is N

2

O

5