Zn salt is mixed with (NH_(4))_(2)S of molarity 0.021M. What amount of Zn^(2+) will remain unprecipitated in 12 mL of the solution ? (K_(SP) "of ZxnS" = 4.51xx10^(-24))

Zn salt is mixed with (NH_(4))_(2)S of molarity 0.021M. What amount of

1.	Zn salt is mixed with (NH_(4))_(2)S of molarity 0.021M. What amount of Zn^(2+) will remain unprecipitated in 12 mL of the solution ? (K_(SP) "of ZxnS" = 4.51xx10^(-24))
Answer» ANSWER :`1.677xx10^(-22)g//12mL;`