Question

Emperical formula of a compound is CH2O. Molecular weight is 90.caluclate the molecular formula

Answer 1

Hey mate!!

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Molecular weight= n x Empirical weight

Where,

n = number of times of E.F

Given m.wt = 90g

E.wt = 12+2+16 =30g

So,

n = 90/30=3

Hence,

Its molecular formula will be

3(CH2O) = C3H6O3

HOPE it will help you...

#phoenix