You are assigned the task of separating a desired granular material, with a density of 3.26 g/cm3, from an undesired granular material that has a density of 2.04 g/cm3. You want to do this by shaking the mixture in a liquid. A solid will float on any liquid that is more dense. Using an Internet-based source, find the densities of the following substances: carbon tetrachl oride, hexane, benzene, and diiodomethane. Which of these liquids will serve your purpose, assuming no chemical interaction between the liquid and the solids?