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Suppose elements X and Y combine to form...

Suppose elements `X` and `Y` combine to form two compounds `XY_(2)` and `X_(3)Y_(2)` when 0.1 mole of former weigh `10 g` while 0.05 mole of the latter weigh `9g`. What are the atomic weights of `X` and `Y`.

A

40, 30

B

60, 40

C

20, 30

D

30, 20

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