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The elements A and B form purely covalent compounds having molecular formulae AB2 and AB4. When dissolved in 20g of benzene, 1g of AB2 lowers the freezing point by 2.3K, whereas 1g of AB4 lowers it by 1.3K. the molal depression constant for benzene is 5.1 K kg/mol, calculate the atomic mass of A and atomic mass of B.

The elements A and B form purely covalent compounds having molecular
formulae AB2 and AB4. When dissolved in 20g of benzene, 1g of AB2 lowers
the freezing point by 2.3K, whereas 1g of AB4 lowers it by 1.3K. the molal
depression constant for benzene is 5.1 K kg/mol, calculate the atomic mass of
A and atomic mass of B.

Grade:upto college level

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