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If a compound contains 48% of Carbon, 48% of oxygen and 8% of hydrogen by weight, then what is the possible molecular formula of the compound?

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If a compound contains 48% of Carbon, 48% of oxygen and 8% of hydrogen by weight, then what is the possible molecular formula of the compound?

(a) C2H4O

(b) CH4O3

(c) C4H4O3

(d) C4H8O3

This question was posed to me in an interview for internship.

Question is taken from Analyses of Multicomponent Solutions and Mixtures topic in division Moles, Density & Concentration of Basic Chemical Engineering

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The correct choice is (d) C4H8O3

The explanation: Ratio of number of atoms, Carbon: Hydrogen: Oxygen = 48/12: 8/1: 48/16 = 4:8:3.

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