Chapter 4-Chemical Dominoes
Section 3: Stoichiometry: How Much Gas is Produced?
Pre-Test
1) Which of the following is NOT made up of atoms?
a. Heat
b. A gas
c. A cell
d. A solid
2) Which of the following is smallest?
a. A germ
b. An atom
c. The width of a hair
d. A cell in your body
3) When heated, oxygen reacts with copper to form copper oxide.
What is the mole ratio of copper atoms to oxygen molecules?
a. 1:1
b. 1:2
c. 2:2
d. 2:1
4) If you started out with 20 moles of copper atoms, how many liters of oxygen gas would
be used? Refer to the diagram in question #3.
a. 112 liters of oxygen gas
b. 224 liters of oxygen gas
c. 448 liters of oxygen gas
d. 896 liters of oxygen gas
5) The diagrams below represent the combustion of propane with oxygen. This reaction
produces carbon dioxide and water.
How many liters of carbon dioxide gas would be produced from 10.0 moles of oxygen
gas?
a.
b.
c.
d.
134 liters of carbon dioxide
168 liters of carbon dioxide
280 liters of carbon dioxide
373 liters of carbon dioxide
Chapter 4-Chemical Dominoes
Section 3: Stoichiometry: How Much Gas is Produced?
Pre-Test Answer Key
1)
2)
3)
4)
5)
A
B
D
B
A