Question 9.8: A bottle contains 59 mL of lemon extract solution. If the ex...

STEP 1   State the given and needed quantities.

STEP 2   Write the concentration expression.

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

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

Volume percent (v/v) = \overset{Two  SFs}{\underset{Two  SFs}{\frac{49  mL  alcohol}{59  mL  solution}}} \times 100 % = 83% \underset{Two  SFs}{(v/v)  alcohol  solution }