Caffeine has a molecular weight of 194. if it contains 28.9% by mass o – InterviewSolution

1.	Caffeine has a molecular weight of 194. if it contains 28.9% by mass of nitrogen. Number of atoms of nitrogen in one molecular of caffeine is:
Answer» 4 6 2 3 Solution :MASS of nitrogen is 194 amu CAFFEINE `=(28.9)/(100)xx194` =56 amu

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