el peso atomico de la sustancia es 210 uma y que su composición porcentual es de 33.18% Na, 36.04% As y el resto es oxígeno (O). Determine la fórmula molecular de la sustancia. Na masa atomica 22.89 g/ mol uma, As arsenico masa ATOMICA 74.92 g/mol y oxigeno 15.99 g/mol uma *

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.