Arrange the following solvents/solvent mixtures in order of increasing polarity: hexanes, ethyl acetate, 7:3 hexanes-ethyl acetate, 9:1 hexanes-ethyl acetate. 3. Suppose a non-polar compound is spotted on a TLC plate, which solvent from #2 will move the compound the farthest from the origin? Which solvent from #2 will move the compound the least from the origin?

What happens to the atomic radius when an elctron is lost

The minerals found in bones are deposited by living cells called

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.