Interpret the chemical equation in terms of numbers of moles of reactants and products. 2KCIO^3 (s) -> 2KCI (s) + 30^2 (g)

Can someone me with these questions plz.

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.

When the mercury level in a barometer decreases that atmospheric pressure has