Question

20.
A sample of impure air contains 80% N, 10% 0,, 5% CO, and 5% Ar by moles. The average
molecular weight of the sample is : (Atomic wt. = Ar = 40)
(A) 29.4
(B) 29.6
(C) 29.8
(D) 30.0​

Answer 1

Answer:

option is b hope it helps u..