1.

X and Y are two elements which form `X_(2)Y_(3)` and `X_(3)Y_(4)`. If `0.20` mol of `X_(2)Y_(3)` weight `32.0g` and `0.4mol` of `X_(3)Y_(4)` weigths `92.8g`, the atomic weights of X and Y are respectivelyA. `16.0` and `56.0`B. `8.0` and `28.0`C. `56.0` and `16.0`D. `28.0` and `8.0`

Answer» Correct Answer - 3
`(32)/(2x+3y)=0.2," "(92.8)/(3x+4y)=0.4`.Hence `: x=56 & y=16`


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