4 If necessary, change the number of one of the molecules to make the atoms of at least one element balance ... 5 Repeat steps 3 and 4 until the chemical equation is balanced.

Aa Aa Aa If you thought you left balancing chemical reactions (stoichiometry) behind in freshman chemistry class, think again. Biological Stoichiometry is the study of the balance of energy and ...

To balance an unbalanced equation, you need to add numbers to the left of one or more formulae. Here is one way to work out how to do this for the reaction between nitrogen and hydrogen.