1.

The Vapour Density of a gaseous element is 5 times that of oxygen under similar conditions. It the molecules is triatomic, what will be its atomic mass?

Answer»

Solution :`"Molecular mass of oxygen"=32u`
`"DENSITY of oxygen"=(32)/(2)=16u`
`"Density of gaseous element"=16xx5=80u`
`"Molecular mass of gaseous element"=80xx2=160u`
Atomicity of the element = 3
`"ATOMIC mass of the element"=("Molecular mass")/("Atomicity")=(160)/(3)=53.33u.`


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