53, Caffeine (molecular weight194) contains 28.9%nitrogen. The number – InterviewSolution

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1.	53, Caffeine (molecular weight194) contains 28.9%nitrogen. The number of nitrogen atoms in caffeinemolecule is(2) 4(3) 7(4) 8
Answer» One mol caffeine has wt. 194g So,mass of nitrogen in one mole of caffeine = 28.9/100*194= 56g. We know the mass of nitrogen is 14g So, no. Of Nitrogen atoms in one mole caffeine = 56/14=4atoms

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