The mole percent of H2 and N2 in a mixture is 50% each, what is the mass percentage of H2?(a) 12.5(b) 25(c) 50(d) 87.5I had been asked this question at a job interview.The above asked question is from Analyses of Multicomponent Solutions and Mixtures in division Moles, Density & Concentration of Basic Chemical Engineering

The mole percent of H2 and N2 in a mixture is 50% each, what is the ma

1.	The mole percent of H2 and N2 in a mixture is 50% each, what is the mass percentage of H2?(a) 12.5(b) 25(c) 50(d) 87.5I had been asked this question at a job interview.The above asked question is from Analyses of Multicomponent Solutions and Mixtures in division Moles, Density & Concentration of Basic Chemical Engineering
Answer» The correct choice is (a) 12.5 To explain I would say: Let the MOLES be 50 each, => Mass of H2 = 100, Mass of N2 = 700, => Mass PERCENTAGE of H2 = 100/(100 + 700)*100 = 12.5%.

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