Calculate the mass of precipitate formed by the interaction of excess zinc nitrate solution with a solution containing 11 g of potassium sulfide

We make up the reaction equation
Zn (NO3) 2 + K2S = ZnS + 2KNO3
Calculate the amount of substance K2S = 11g / 110g / mol = 0.1 mol
Calculate the amount of sediment substance ZnS = 0.1 mol
Find the mass of sediment ZnS = M * n (amount of substance) = 0.1 mol * 97 g / mol = 9.7 g
Answer: 9.7

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