1.

Density of nitrogen gas prepared from air is slightly greater than that of nitrogen prepared by chemical reaction from a compound of nitrogen due to the presence of

Answer»

argon
carbon dioxide
some `N_(3)` molecules analogous to `O_(3)`
greater amount of `N_(2)` molecules derived from N-15 isotope

Solution :Air contains about 1% inert gases, MAINLY Ar (At. Wt=40). The atomic wt. of `N_(2)` is 28.


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