Step-by-step explanation:
The molarity or molar concentration is can be calculated by dividing the number of moles of solute by the volume of solution in L.
molarity = moles of solute/volume of solution in L
We want to prepare 6.7 L of a 1.2 M solution of CuF₂. We can find the number of moles of CuF₂ that we have to dissolve in the solution.
molarity = 1.2 M
volume of solution in L = 6.7 L
molarity = moles of CuF₂/(volume of solution in L)
moles of CuF₂ = molarity * volume of solution in L