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Suppose two elements X and Y combine to ...

Suppose two elements `X` and `Y` combine to form two compounds `XY_(2)` and `X_(2)Y_(3)` when `0.05` mole of `XY_(2)` weight `5g` while `3.011xx10^(23)` molecules of `X_(2)Y_(3)` weight `85g`. The atomic masses of `X` and `Y` are respectively.

A

23,30

B

30,40

C

40,30

D

80,60

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