38 Which formulas represent one ionic compound and one molecular compound?
(1) N2 and SO2 (2) Cl2 and H2S
(3) BaCl2 and N2O4(4) NaOH and BaSO4
(1) N2 and SO2 (2) Cl2 and H2S
(3) BaCl2 and N2O4(4) NaOH and BaSO4