Question

The compound was found to contain nitrogen
& oxygen in the ratio, nitrogen 28g & 80g of oxygen.
The formula of the compound is: Why?
(a) No
(6) N₂O₃
(c) N2 O5
(d) N₂ O4

Answer 1

Answer:

c) N2o5 nitrogen peroxide

Explanation:

Nitrogen=28g

Oxygen=80g

ratio 28:80

atomic mass of nitrogen =14u

oxygen =16u

14×2=28

16×5=80

the ratio of nitrogen to oxygen which 28:80 is achieved

hence formula is n205

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Answer 2

Answer:

N2O5

Explanation:

The atomic masses of nitrogen and oxygen are 14 and 16 g/mol respectively.

The number of moles of nitrogen =   28 g / 14 g/mol  = 2 mol

The number of moles of oxygen =   80 g / 16 g/mol = 5 mol

The mole ratio nitrogen : oxygen =2:5

The formula of the compound is N2 O5

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