Answer:
17.53 g
Explanation:
The chemical formula of nickel (II) iodide is NiI₂. Its molar mass (MM) can be calculated from the molar mass of its chemical elements:
MM(NiI₂) = 58.7 g/mol + (2 x 126.9 g/mol)= 312.5 g/mol
Given the following data:
M = 0.187 M = 0.187 mol/L
V= 300 mL = 0.3 L
We calculate the mass of NiI₂ as the product of the molarity of the solution (M), the molar mass (MM) and the volume:
mass = M x MM x V = (312.5 g/mol) x (0.187 mol/L) x 0.3 L = 17.53 g
Therefore, we have to add 17.53 grams of solid nickel(II) iodideto prepare the solution.
