What happens if the spots are made too large when preparing a TLC plate for development? 1. The spots will be difficult to see after development. 2. The spots will saturate the plate, show tailing, and/or diffuse into one another. 3. The spot material will dissolve off the plate. 4. Additional spots will appear on the plate, interfering with analysis.

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".

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.