Tip:

Always double check after balancing is complete. You may need to write your elements and numbers of atoms again in order to double check. Don't skip this very important step.

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Example

Re-check the equation! Double check that the elements are balanced on each side.

MgCl2 + 2NaOH ---> Mg(OH)2 + 2NaCl

1 Mg 1

2 Cl 2

2 Na 2

2 O 2

2 H 2

Now you should have a balanced chemical equation.