Question

The ratio of rate of diffusion of two gases is 1:3, then ratio of their molecular wt is?
a) 1:3
b) 3:1
c) 1:9
d) 9:1

Please tell the answer and how

Answer 1

Answer:

1:9

Explanation:

r1/r2 =√m1/ √m2.

1:3=√m1/√m2

squaring on both sides

1:9=m1/m2