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If the number of molecules of SO(2) (ato...

If the number of molecules of `SO_(2)` (atomic weight=64) effusing through an orifice of unit area of cross-section in unit time at `0^(@)C` and 1 atm pressure in n. the number of He molecules (atomic weight=4) effusin under similar conditions at `273^(@)C` and 0.25 atm is:

A

`(n)/(sqrt(2))`

B

`nsqrt(2)`

C

`2n`

D

`(n)/(2)`

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