a brown gas has the empirical formula NO2. its molar mass is 46 g/mol. what is its molecular formula?

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03-04-2018
Chemistry

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a brown gas has the empirical formula NO2. its molar mass is 46 g/mol. what is its molecular formula?

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blahblahmali blahblahmali · Answer 1 · 2018-04-12T19:50:34+02:00

The empirical formula is the simplest ratio of whole numbers of components in a compound. Molecular formula gives the actual composition of components in the compound.
Empirical formula - NO₂
Mass of one empirical unit - 14 + (16x2) = 46 g
Mass of one mole of the compound - 46 g/mol
Number of empirical units = 46 g/mol / 46 g
Number of empirical units = 1
Therefore molecular formula 1(NO₂)
Molecular formula - NO₂