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Q. The density of nitrogen gas prepared from air is slightly greater than that of nitrogen prepared by a chemical reaction from a compound of nitrogen due to the presence of the following in aerial nitrogen

The p-Block Elements - Part2

Solution:

he density of nitrogen obtained from air (after the removal of $N_2, CO_2$, moisture etc.) is higher than nitrogen obtained chemically. This is due to the presence of heavier argon in the aerial nitrogen