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A gaseous mixture contains oxygen and ni...

A gaseous mixture contains oxygen and nitrogen in the ratio of `1 : 4` by weight therefore the ratio of their number of molecules is

A

`7 : 4`

B

`7 : 8`

C

`7 : 32`

D

`3 : 16`

Text Solution

Verified by Experts

The correct Answer is:
A
Let masses of O2 and `N_(2)` be 1g and 4g
Molecules of `O_(2) = (1)/(32)N_(A)`
Molecules of `N_(2) = (4)/(28)N_(A) = (1)/(7)N_(A)` Ratio of no. molecules `= (1)/(32)N_(A) : (1)/(7)N_(A) = 7 : 32`
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