Stoichiometry Conversions
1. Read the question…
a. Find the given (A)
b. Find the unknown (B)
2. Identify the starting point and stopping point of
the mole map.
3. Set up the mole ratio.
4. Set up the calculations
Mole ratio B
Mole ratio A
Using the following equation:
4 NH3 + 5 O2  4 NO + 6 H2O
How many moles of oxygen (O2) are needed to react
with 56.8 moles of ammonia (NH3) by this reaction?
Given (A):
Unknown (B):
Starting & Stopping:
Mole Ratio:
Using the following equation:
Using the following equation:
4 NH3 + 5 O2  4 NO + 6 H2O
4 NH3 + 5 O2  4 NO + 6 H2O
How many moles of ammonia (NH3) are needed to
form 6.82 grams of water by this reaction?
How many grams of oxygen (O2) are needed to form
14.9 grams of NO by this reaction?
Given (A):
Given (A):
Unknown (B):
Unknown (B):
Starting & Stopping:
Starting & Stopping:
Mole Ratio:
Mole Ratio: