We are to assume that the density we are after is at 298 K (i.e. at 25°C).
You are assigned the task of separating a desired granular material, with a density of 3.62 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 in which the heavier material will fall to the bottom and the lighter material will float. A solid will float on any liquid that is more dense. Using the Internet or a handbook of chemistry, look for the densities of the following substances: carbon tetrachloride, hexane, benzene, and diiodomethane.
Which of these liquids will serve your purpose, assuming no chemical interaction between the liquid and the solids?
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Based on our data, we think this problem is relevant for Professor Chalk's class at UNF.