1.

A gas diffuse (1)/(5) times as fast as hydrogen at same pressure. Its molecular weight is

Answer»

50
25
`25 SQRT(2)`
`50 sqrt(2)`

Solution :`r_(g)=(1)/(5).r_(H_(2))`
`(M_(g))/(M_(H_(2)))=[(r_(H_(2)))/(r_(g))]^(2)=(5)^(2)=25`
`M_(g)=2 xx 25 = 50`


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