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What is the value of x in C2H8(OH)x if the percentage by weight of hydrogen is 12%?

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What is the value of x in C2H8(OH)x if the percentage by weight of hydrogen is 12%?

(a) 1

(b) 2

(c) 3

(d) 4

The question was asked at a job interview.

The query is from Analyses of Multicomponent Solutions and Mixtures topic in portion Moles, Density & Concentration of Basic Chemical Engineering

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Correct choice is (d) 4

For explanation I would say: Let the total weight of the compound be 100 g, => weight of hydrogen in the compound is 12 g, => x = 12 – 8 = 4.

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