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A certain gas takes three times as long ...

A certain gas takes three times as long to effuse out as helium. Its molecular mass will be

A

`27 mu`

B

`36 mu`

C

`64 mu`

D

`9 mu`

Text Solution

Verified by Experts

The correct Answer is:
B
`r_(He)/r_("gas")=3=sqrt(M_("gas")/M_(He))` or `9= M_("gas")/4`
or `M_("gas")=36`
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