Question

Density of nitrogen gas prepared from air is slightly greater than that of nitrogen prepared by chemical reaction from a compound of nitrogen, because aerial nitrogen contain:

• A. $C{O}_2$
• B. argon
• C. some $N_2$ molecules analogous to $O_2$
• D. greater amount of $N_2$ molecules derived from $N-15$ isotope

Answer 1

Answer: (D)

greater amount of $N_2$ molecules derived from $N-15$ isotope

Density of nitrogen gas prepared from air is high than that of nitrogen prepared by chemical reaction from a compound of nitrogen because aerial nitrogen contains more amount of $N_2$ molecules derived from $N^{15}$ isotopes.