1.

If densities of two gases are in the ratio 1 : 2 and their temperatures are in the ratio 2 : 1, then the ratio of their respective molar mass at certain pressure is:

Answer»

`1:1`
`1:2`
`2:1`
`4:1`

SOLUTION :`PM_(W)=dRT,M_(W)propdT`
`(M_(1))/(M_(2))=(d_(1)T_(1))/(d_(2)T_(2))=(1xx2)/(2xx1)=1/1`


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