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Stoichiometry
Test Description: Chapter 9 Chemistry Addison-Wesley
Instructions: Answer all questions to get your test result.
1) The amount of product that forms in the laboratory when an experiment is carried out is called the
A
theoretical yield.
B
percent yield.
C
actual yield.
D
normal yield.
2) In a chemical reaction
A
both mass and the number of atoms are conserved.
B
What is a chemical reaction?
C
only mass is conserved.
D
the number of moles is always conserved.
3) The reactant that there is more than enough of to react with the other reactant is called the
A
theoretical reactant.
B
limiting reactant
C
actual reactant.
D
excess reactant
4) The ratio of the actual yield to the experimental yield is called the
A
percent yield.
B
conserved yield.
C
amount that you get.
D
theoretical percentages.
5) The calculations of quantities in chemistry is called
A
linear regression.
B
addition.
C
calculus.
D
stoichiometry
6) The maximum amount of products that can be formed from given amounts of reactants is called
A
final yield.
B
actual yield.
C
theoretical yield.
D
There is no name for it.
7) The substance that determines the amount of product that can be formed is called
A
final reactant.
B
limiting reactant
C
excess reactant.
D
determining reactant
8) The ratio that is determined from a balanced chemical reaction that is used to determine quantities is called a
A
mouse ratio
B
determining ratio
C
actual ratio
D
mole ratio
9) To find a mole ratio you
A
put the coefficient of what you are looking for over the coefficient of what you know.
B
put the coefficient of what you are looking for over the sum of all the coefficients .
C
put the coefficient of what you know over the coefficient of what you are looking for.
D
put the coefficient of what you are looking for over one.
10) The starting materials in a reaction are called
A
products
B
beginnings
C
endings
D
reactants
*select an answer for all questions
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