Question

28. If average molecular wt. of air is 29, then assuming N, and o, gases are there which options
are correct regarding composition of air:
(1) 75% by mass of N, (ii) 75% by moles N2 (iii) 72.41% by mass of N2
(a) only (i) is correct
(b) only (ii) is correct
(c) both (ii) and (iii) are correct
(d) both (i) and (ii) are correct​

Answer 1

Answer:

Correct option : (1) 75% by mass of N2