Stoichiometry Steps:
With Limiting Reactant:
1. Read CAREFULLY and balance equation
1. same
2. Write given and ? under substances
2. write both givens (2 reactants) and ?
under substances
3. Find molar masses for given and ?
substances
3. same
4. Calculation: ALWAYS THE SAME 3
STEPS!
4. Two calculations: find the mass of
product for each reactant
g given
molar
mass
want
have
molar
mass
(mol
ratio)
5. The lesser answer is the answer, and
that reactant is the limiting reactant
6. To find the mass of XS left over, use the
mass of the LR to calculate the mass of
XS reactant used
total XS - XS used = mass of XS leftover
if % yield is asked for:
actual yield
theoretical yield
x 100%

actual yield will be given, how much
product actually collected

theoretical yield is calculated by the
above steps