What is most likely to refract a beam of light ?

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.

What is the molecular formula of ferrous nitrate and ferric nitrate

What amount in moles does 242 l of carbon dioxide occupy at 1.32 atm and 20 degrees c?