an organic compound was found to have contained carbon =40.65%, hydrogen =8.55%, and nitrogen=23.7%. it's vapour density was found to be 29.5. what is the molecular formula of the compound ?
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Empirical formula = C2H5NO
Molecular mass = 2 x (vapour density)
= 2 x 29.5
= 59.0
Empirical formula mass of C4H5NO = 24 + 5 + 14 + 16 =
59
n = (Molecular mass) / (Empirical formula mass)
= 59/59 = 1 Empirical formula mass
= 59
∴∴ Molecular formula = (Empirical formula)n
= (C2H5NO)1
Molecular formula = C2H5NO
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