If the v(rms) is 30R^(1//2) at 27^(@)C t...

If the `v_(rms)` is `30R^(1//2)` at `27^(@)C` then calculate the molar mass of gas in kilogram.

A

1

B

2

C

4

D

0.001

Verified by Experts

The correct Answer is:

D

`u_(rms) = sqrt((3RT)/(M))`
`sqrt(30^2 R) = sqrt((3RT)/(M)) rArr30 xx 30R = (3R xx 300)/(M)`
`rArr M = (3 xx 300)/(30 xx 30) = 1g = 0.001 kg`

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