Please help solve 5-10

(5) Why were different solvent compositions used to do the chromatography experiment? (6) Hexanes and ethyl acetate are the two components used to modulate solvent composition. Draw the structures using ChemDraw and paste here. Which of these is more polar and which of these is less polar? (7) Why is it called "hexanes" and not simply "hexane"? (8) Once you put the spotted TLC plate into the solvent, you will see the solvent begin to move up the plate. How do you determine when the process is complete and the TLC plate should be taken out of the solvent? (9) Once you take your TLC plate out of the solvent, where should you draw a line to indicate the solvent front? (10) Just looking at the number of polar functional groups in the five dye molecules used in this experiment, make an attempt to rank them from least polar to most polar here