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20% N(2)O(4) molecules are dissociated i...

20% `N_(2)O_(4)` molecules are dissociated in a sample of a gas at `27^(@)C` and 760 torr pressure. The density of the equilibrium mixture is `:`

A

`3.1 g L^(-1)`

B

`6.2 g L^(-1)`

C

`12.4 g L^(-1)`

D

`18.0 g L^(-1)`

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The correct Answer is:
C
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