Answer to Question #36753 in Chemistry for Ahmed Gaji

Question

2.804 g of a mixture containing manganese (IV) oxide and concentrated hydrochloric acid was heated. The resultant mixture weighed 2.591g and 71cm cube of chlorine,measured at s.t.p., was given off. show that thi reaction obeys the law of conservation of mass.[1 mole gas at s.t.p. occupies 22.4dm cube].