Name : ______________________________________________ Date: __________________ Period: _______
Stoichiometry Extra Practice: Little Bit of Everything
1. The Basics:
2 C4H10 + 13 O2  8 CO2 + 10 H2O
a. How many moles of oxygen gas are needed to completely react with 3.4 moles of C4H10?
Mole ratio: ____ mole O2 = ____ mole C4H10
b. How many moles of water are produced when 5 moles of oxygen react with excess C4H10?
Mole ratio: ____ mole O2 = ____ mole H2O
c. How many moles of CO2 can be produced if 25.4 moles of C4H10 react with a sufficient amount of
oxygen?
Mole ratio: ____ mole ____ = ____ mole ______
2. Training Wheels: ___KClO3  ___KCl + ___O2
a. Balance the above reaction.
b. How many grams of O2 can be produced from 2.2 moles of KClO3?
Mole ratio: ____ mole O2 = ____ mole KClO3
Molar mass: 1 mole O2 = ________ g O2
c. How many moles of KCl can be produced from 100 grams of KClO3?
Mole ratio: ____ mole KCl = ____ mole KClO3
Molar mass: 1 mole KClO3 = ________ g KClO3
d. How many grams of KClO3 are needed to produce 4.54 moles of O2?
Mole ratio: ____ mole ____ = ____ mole _______
Molar mass: 1 mole ________ = ________ g _______
e. How many moles of KClO3 are needed to produce 25 grams of KCl?
Mole ratio:
Molar mass:
3. Look Mom, No Hands!: ___Fe2O3 + ___C  ___Fe + ___CO
a. Balance the above reaction.
b. You want to produce 100 grams of CO. How many grams of Fe2O3 do you need to react with excess
carbon?
Mole ratio: ______ mol CO = _______ mol Fe2O3
Molar mass: 1 mole Fe2O3 = _____________ g Fe2O3
Molar mass: 1 mole CO = _____________ g CO
c. How many grams of Fe can be produced from 20 grams of carbon?
Mole ratio: ______ mol _____ = ______ mol ______
Molar mass: 1 mole _____ = _____________ g _______
Molar mass: 1 mole _____ = _____________ g _______
d. How many grams of iron can be produced if you start with 25 grams of Fe2O3?
Mole ratio:
Molar mass:
Molar mass:
e. How many grams of iron can be produced if you start with 25 grams of C?
Mole ratio:
Molar mass:
Molar mass:
f. If you started with a mixture of the reactants in d. and e., which is the limiting reactant? _________
How much iron (Fe) could you produce?
4. Speed Wobble: ___NH3 (g) + ___O2 (g)  ____NO (g) + ___H2O (l)
a. Balance the above reaction.
b. How many liters of NO gas can be produced from 20 grams of NH3 gas? (1 mol = 22.4 L)
c. How many liters of O2 gas would be needed to produce 500 liters of NO gas?