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HOW TO BALANCE A CHEMICAL EQUATION???????????? |
A chemical equation is a theoretical or written representation of what happens during a chemical reaction. The law of conservation of mass states that no atoms can be created or destroyed in a chemical reaction, so the number of atoms that are present in the reactants has to balance the number of atoms that are present in the products. Follow this guide to learn how to balance chemical equations. Example:C3H8 + O2 ---> H2O + CO2 . Write down the number of atoms C3H8 + O2---> H2O + CO2. Left side Right side C 3 1 H 8 2 O 2 3 Always have hydrogen and oxygen for last C3H8 + O2---> H2O + CO2 Left side Right side C 3 1 H 8 2 O 2 3 C3H8 +O2-----> H2O + 3CO2 Left side Right side C 3 3 H 8 2 O 2 7 Balance the hydrogen atoms C3H8 + O2---->4H2O + 3CO2 Left side Right side C 3 3 H 8 8 O 2 10 Finish by balance the oxygen C3H8 +5O2---->4H2O + 3CO2 Left side Right side c 3 3 H 8 8 O 10 10 C3H8 + 5O2--->4H2O + 3CO2. |
