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0.2 millimoes of Zn^(2+) ion is mixed wi...

0.2 millimoes of `Zn^(2+)` ion is mixed with `(NH_(4))_(2)` S of molarity 0.02 M. The amount of `Zn^(2+)` that remains uprecipitated in 20 mL of this solution would be :
(Given : `K_(sp) (ZnS)=4xx10^(-24))`

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