Use the density values in Table 2.8 to solve each of the following problems:
a. If a bottle of olive oil contains $1.2 \mathrm{~kg}$ of olive oil, what is the volume, in milliliters, of the olive oil?
b. A cannon ball made of iron has a volume of $115 \mathrm{~cm}^{3} .$ What is the mass, in kilograms, of the cannon ball?
c. A balloon filled with helium has a volume of $7.3 \mathrm{~L}$. What is the mass, in grams, of helium in the balloon?