In Figure 13-3, which spheres have the GREATEST density (top, middle, or
bottom)? How do you know?

bottom

Explanation:

the ones with the greatest density will sink. if they have a lighter density than water, they will float. if they have about the same, they will stay in the middle. and if they have a higher density they will sink.

bottom

Explanation:

An object will only float if its density is less than the density of the liquid its placed in. So the more sunken the sphere is, the greater the density.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".