Completing an Algebraic Balance 1. To balance an unbalanced equation you need to add numbers to the left of one or more formulae. Write the Number of AtomsNext you need to determine how many atoms of each element are present on each side of.
To balance equations on your own follow these simple rules.
N2 H2 - NH3 On the left there is 2 N and 2 H On the right there is 1 N and 3 H. Here we will do a bunch of practice problems for balancing chemical equations. Use uppercase for the first character in the element and lowercase for the second character. So whatever you do to one side of the youve got to do to the other side.