What is Stoichiometry?

Definition: the relationship between amount of reactants used in chemical reaction and the amounts of products produced by reaction.

With Stoichiometry students will be able to predict the amount of a specific product that is created when a given amount of reactant is used.

Bolded Coefficients in a reaction equation:
2H2 + 1O2 = 2H20

these coefficients can refer to the amount of  molecules.

ratio:
H2   =  2                                                    2 mol H2
O2       1                 also known as             1 mol O2


eg.

1N2+3H2 --> 2NH3    How many molecules of N2 are required to react with 14 molecules of H2?

15 mol H2 x  1 mol N2
                      3 mol H2     =    5 molecules