Question

49. Silver is often extracted from ores such as K[Ag(CN)2] and then recovered by the reaction 2K[Ag(CN)2] (aq)+Zn(s) ⟶ 2Ag(s)+Zn(CN)2(aq)+2KCN(aq)

(a) How many molecules of Zn(CN)2 are produced by the reaction of 35.27 g of K[Ag(CN)2]?

(b) What mass of Zn(CN)2 is produced?

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