The volumes of four gaseous compounds at 298 K and 101.3 kPa are shown in the table below. Which two samples contain the same number of molecules

Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now 4+1+01-4-. if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be 3+2+02-3-.