One volume of hydrogen combines with sulphur to produce one volume of gas `A`. If the vapour density of A be 17, what its molecular formula.

Explanation

Vapour density of 'A' = 17
Molecular mass = 34
Let x atoms of sulphur combine with 1 molecule of hydrogen.
Formula of 'A' would be `H_2S_x`
`2xx1+Xxx32 = 34 `
X = 1, Formula of 'A' is `H_2S`.