Solve...................and explain
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∆Tf= kf ×molality where ∆Tf is Lower fezinng point and kf is molal depression constant and molality = (weight of solute×1000/molecular mass of solute × weight of solvent ). and putting the value and we got the molecular weight of both solute AB2 =110.8,AB4=196.15 I hope it may help you
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