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Vapour density of mixture of NO(2) and N...

Vapour density of mixture of `NO_(2)` and `N_(2) O_(4)` is 34.5 , then percentage abundance of `NO_(2)` in mixture is

A

`50%`

B

`25%`

C

`40%`

D

`60%`

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The correct Answer is:
A
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