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please help (10) In an aqueous solution of Pb(NO3)2 with molality m=0.01 mol/kg, it is found that 17% of the Pb2+ ions are in the

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(10) In an aqueous solution of Pb(NO3)2 with molality m=0.01 mol/kg, it is found that 17% of the Pb2+ ions are in the form of (PbNO3)+ ionic pairs. For this solution: (a) Compute the ionic strength. (b) Use the Debye-Hckel limit law to compute the (geometric) mean activity coefficient yu and the activity a+ for the Pb2+ ions

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