Which layer is likely to be on the bottom in

each case?
a. Sodium chloride layer or a layer containing a high-density organic compound
dissolved in methylene chloride (d � 1.4 g/mL)
b. Sodium chloride layer or a layer containing a low-density organic compound
dissolved in methylene chloride (d � 1.1 g/mL)

High density sinks. Low density floats.

To determine which layer is likely to be on the bottom in each case, we need to compare the density of the layers. The layer with a higher density will generally be at the bottom.

a. In the case of sodium chloride layer or a layer containing a high-density organic compound dissolved in methylene chloride (density 1.4 g/mL), since the density of the organic compound is high, it is likely to sink to the bottom. Therefore, the layer containing the high-density organic compound will be on the bottom.

b. In the case of sodium chloride layer or a layer containing a low-density organic compound dissolved in methylene chloride (density 1.1 g/mL), the density of the organic compound is low. As a result, it is likely to float on top. Thus, the sodium chloride layer will be at the bottom.

Overall, when comparing the densities of the layers, the layer with the higher density will be at the bottom, while the layer with the lower density will be on top.