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A gaseous mixture contains CO(2) (g) and...

A gaseous mixture contains `CO_(2)` (g) and `N_(2)O` (g) in a 2 : 5 ratio by mass. The ratio of the number of molecules of `CO_(2)` (g) and `N_(2)O` is

A

`5:2`

B

`2:5`

C

`1:2`

D

`5:4`

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The correct Answer is:
B
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