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A 0.6113 g mixture of KCN (MW = 65.116 g/mol) and NaCN (MW = 49.005 g/mol)...

A 0.6113 g mixture of KCN (MW = 65.116 g/mol) and NaCN (MW = 49.005 g/mol) was dissolved in water. AgNO3 was added to the solution, precipitating all the CN– in solution as AgCN (MW = 133.886 g/mol). The dried precipitate weighed 1.421 g. Calculate the weight percent of KCN and NaCN in the original sample.

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