Show your work for each problem

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

How many moles of al3+ ions are in 1.25 moles of al2o3

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.