Which elements make up a water molecule?
hydrogen and nitrogen
O oxygen and nitrogen
O oxygen and carbon
hydrogen and oxygen

Why did southern business leaders want to increase the number of slaves

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

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.