Question 9.9: A potassium iodide solution may be used in a diet that is lo...

STEP 1   State the given and needed quantities.

STEP 2   Write the concentration expression.

Mass/volume percent (m/v) = \frac{mass  of  solute }{volume  of  solution} \times 100 %

STEP 3   Substitute solute and solution quantities into the expression and calculate.

Mass/volume percent (m/v) = \overset{Two  SFs}{\underset{Two  SFs}{\frac{5.0  g  KI}{250  mL  solution}}} \times 100 % = 2.0% \underset{Two  SFs}{(m/v)  KI  solution }