We have \(100 \mathrm{~L}\) of a \(70 \mathrm{vol} \%\) solution of acetone at \(25^{\circ} \mathrm{C}\) that is saturated with lovastatin. We plan to add more acetone to increase acetone concentration to \(80 \mathrm{vol} \%\) and then add more lovastatin to saturate the solution at \(80 \mathrm{vol} \%\) acetone.

a. What is the lovastatin concentration in \(\mathrm{kg} / \mathrm{L}\) at \(70 \mathrm{vol} \%\) acetone?

b. How many \(\mathrm{L}\) of pure acetone and \(\mathrm{L}\) of pure water were mixed to produce \(100 \mathrm{~L}\) of a 70 vol\% solution?

c. How many \(\mathrm{L}\) of pure acetone should be added to have an \(80 \mathrm{vol} \%\) solution and how many \(L\) of solution are produced?

d. How many kg of lovastatin should be added to produce a saturated solution? Data are in Example 17-15, Figure 17-23, and Table 17-5. Do not assume volumes add.