From a certain apparatus, the diffusion rate of hydrogen has an average value of `28.7 cm^(3) s^(-1)`. The diffusion of another gas under the same condition is measured to have an average rate of `7.2 cm^(3) s^(-1)`. Identify the gas.

Options

A. Carbon
B. Oxygen
C. Nitrogen
D. Boron

Answer

B

Explanation

`(r)/(r')=sqrt((M')/(M))`
`M'=((r)/(r'))^(2)xxM`
`M'=((28.7)/(7.2))^(2)xxM=16M`