(Solved): chemist prepares a solution of iron(II) bromide (FeBr2) by measuring out 56.5mol of iron(II) b ...

chemist prepares a solution of iron(II) bromide $$\left({\mathrm{FeBr}}_2\right)$$ by measuring out $$56.5?\mathrm{mol}$$ of iron(II) bromide into a 100 . mL volumetric flask and filing the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's iron(II) bromide solution. Be sure your answer has the correct number of significant digits.