1.

In a mixture of 1 gm H_(2) and 8 gm O_(2), the mole fraction of hydrogen is

Answer»

`0.667`
`0.5`
`0.33`
None of these

Solution :MOLE FRACTION `=(N)/(n+N)=((W)/(m))/((w)/(m)+(W)/(M))=((1)/(2))/((1)/(2)+(8)/(32))=0.667`.


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