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9 December, 03:38

What is the molecular formula of a compound if its empirical formula is NO2 and its molar mass is 138.02 g/mole?

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  1. 9 December, 06:50
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    Let (NO2) n be the molecular formula,

    (14+16x2) n=138.02

    n=3

    molecular formula: (NO2) 3=N3O6
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