1.

At 400 K, the root mean square (rms) speed of a gas X (molecular weight = 40) is equal to the most probable speed of gas Y at 60 K. The molecular weight of the gas Y is.

Answer»


SOLUTION :`u_(RMS)=alpha_(mp)`
`SQRT((3RT)/(M_(X)))= sqrt((2RT)/(M_(Y)))`
`= sqrt((3R xx 400)/(40))=sqrt((2R xx 60)/(M^(Y)))`
`M_(Y)=4`


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