Stiochiometry

Stoichio, in greek, pretains to elements.
-Works with quantative analysis of chemical reactions and is about measuring the amounts of elements & compounds involved in a reaction. This is part of the study of reactions.

1 AgNO₃ + 1 KCl ‑‑‑‑> 1 AgCl  + 1 KNO₃

_{In stiochiometry, this balanced equation can also show the mole ratio of 1:1:1:1}

* Note that the equations all must be balance. Otherwise, the mole ratio will be totally wrong.

-The coefficient is of the balanced equations is equaled to the number of moles reacted or produced.

-What you need over what you have

eg. 4NH3 + 5O2 ------> 6H2O + 4NO

# of moles of H2O = ? ---------------> 2.00 moles O2 (6 mol H2O/5 mol O2) = 2.40 moles of H2O