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Two elements A and B form compounds havi...

Two elements A and B form compounds having molecular formula `AB_(2)` and `AB_(4)` When dissolved in 20 g of benzene, 1 g of `AB_(2)` lowers the freezing point by 2.3 K, whereas 1.0 g of `AB_(4)` lowers it by 1.3 K. The molar depression constant for benzene is 5.1 K kg `mol^-1`. Calculate the atomic mass of A and B.

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MODERN PUBLICATION-SOLUTIONS-EXERCISE
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