MHT CET202014 Oct 2020Morning ShiftChemistrySome Basic Concepts of ChemistryActual

What is the mass percentage of carbon in urea? (mol. mass of urea =60 ~g ~mol ⁻¹ )

Options

A28 0 %
B20 0 %
C26.67 %
D46.67 %

Correct answer

B. 20 0 %

Step-by-step solution

The molecular formula of Urea is: We know, Mass percentage of carbon in urea = Molar mass of carbon molar mass of urea 100 Thus, the molar mass of Ureas =4 1+12+2 14+16=60 Mass percentage of Carbon in Ureas = 12 60 100=20 % Hence, option A is correct.

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