Question

a compound contains 69.5 % Oxygen and 30.5% nitrogen and its molecular weight is 92​

Answer 1

Explanation:

moles of oxygen= 69.5/16

=4.34

moles of nitrogen= 30.5/14

= 2 .18

ratio of moles of nitrogen and oxygen= 2.18 : 4.34

= 1:2

empirical formula= NO2

molecular formula = (NO2)n

where n = molecular mass/ empirical mass

= 92/46

= 2

therefore the formula of the compound is N2O4.

Answer 2

Answer:

Explanation:

moles of oxygen= 69.5/16

=4.34

moles of nitrogen= 30.5/14

= 2 .18

ratio of moles of nitrogen and oxygen= 2.18 : 4.34

= 1:2

empirical formula= NO2

molecular formula = (NO2)n

where n = molecular mass/ empirical mass

= 92/46

= 2

therefore the formula of the compound is N2O4.

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