Balancing Chemical Equations

Matter does not appear /disappear, it stays the same.For example, Zinc carbonate + sulphuric acid -> Zinc sulphate +waterBoth sides of the equation weigh the same.To balance an equation, both sides must have the same amount of each element.Reactants ProductsMg0 + HNO3 -> Mg (NO3)2 +H2OMg 1 Mg 1O 4 O 6H 1 H 2N 1 N 2Mg03 + 2H2N03 - Mg(NO3)2 + H2O