A compound contains 69.5% oxygen and 30.5% nitrogen and its molecular weight is 92.The molecular formula of the compound is ____?

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N2O

NO2

N2O4

N2O5

answer is C.

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Detailed Solution

N=30.514=2.17O=69.516=4.34 simple ratio =1:2 Empirical formula =NO2 and molecular weight = 92Therefore, Molecular formula =2×NO2=N2O4

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