Some scientists hypothesize that earth's ozone layer is being damaged by a. ultraviolet radiation c. plant life on earth b. chlorofluorocarbons d. global warming

0.09 moles of sodium sulfate in 12 ml of solution

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

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.