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[" 25.Caffiene has a molecular weight of...

[" 25.Caffiene has a molecular weight of "194." If it contains "28.9%" by mass of nitrogen,number of "],[" atoms of nitrogen in one molecule of caffeine is: "],[[" (a) "4," (b) "6," (c) "2," (d) "3]]

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Caffeine has a molecular weight of 194. If it contains 28.9 % by mass of nitrogen, number of atoms of nitrogen in one molecule of caffeine is

Caffiene has a molecular mass of 194 . If it contains 28.9% by mass of nitrogen, number of atoms of nitrogen in one molecule of caffeine is :

Caffiene has a molecular mass of 194 . If it contains 28.9% by mass of nitrogen, number of atoms of nitrogen in one molecule of caffeine is :

Caffiene has a molecular mass of 194 . If it contains 28.9% by mass of nitrogen, number of atoms of nitrogen in one molecule of caffeine is :

Caffeine has a molecular mass of 194 . If it contains 28.9% by mass of nitrogen, Calculate number of atoms of nitrogen in one molecule of caffeine ?

Caffein has molecular weight of 194. It contain 28.9% by mass of nitrogen. Number of atoms of nitrogen in one molecule of it is

Caffeine contains 28.9% nitrogen. If molecular weight of caffeine is 194, how many N atoms are present in one molecule of caffeine ?