Problem: 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?

FREE Expert Solution

We are to assume that the density we are after is at 298 K (i.e. at 25°C).

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Problem Details

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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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Density concept. You can view video lessons to learn Density. Or if you need more Density practice, you can also practice Density practice problems.