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A certain mass of substance in 10 g of b...

A certain mass of substance in 10 g of benzene lowers the freezing point by `1.28^(@)C` and in 100 g of water lowers the freezing point by `1.395^(@)C` separately. If the substance has normal molecular weight in benzene and completely dissociated in water, calculate number of moles of ions formed by its 1 mole dissociation in water `(K_(f_("water"))=1.86, K_(f_("benzene"))=5.00)`

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