Calculate the mass of the precipitate that precipitated when draining 500 g of a 2%

Calculate the mass of the precipitate that precipitated when draining 500 g of a 2% potassium iodide (KI) solution with an excess of lead nitrate solution (Pb (NO 3) 2)

Explanation of the solution: to solve this problem, you need to write the reaction equation, then you need to find the mass of potassium iodide (multiply the mass of the potassium iodide solution by its mass fraction). After that, we find its amount of substance (the resulting mass of salt is divided by its molar mass). The amount of lead iodide precipitate substance is equal to half the amount of potassium iodide substance (according to the reaction, they are 2: 1). The mass of the sediment is equal to the product of its amount of substance by the molar mass