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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
percent yield.
B
theoretical 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
the number of moles is always conserved.
D
only mass is conserved.
3) The reactant that there is more than enough of to react with the other reactant is called the
A
actual reactant.
B
theoretical reactant.
C
excess reactant
D
limiting reactant
4) The ratio of the actual yield to the experimental yield is called the
A
percent yield.
B
theoretical percentages.
C
amount that you get.
D
conserved yield.
5) The calculations of quantities in chemistry is called
A
calculus.
B
linear regression.
C
addition.
D
stoichiometry
6) The maximum amount of products that can be formed from given amounts of reactants is called
A
theoretical yield.
B
actual yield.
C
There is no name for it.
D
final yield.
7) The substance that determines the amount of product that can be formed is called
A
determining reactant
B
excess reactant.
C
limiting reactant
D
final reactant.
8) The ratio that is determined from a balanced chemical reaction that is used to determine quantities is called a
A
mole ratio
B
mouse ratio
C
determining ratio
D
actual 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 know over the coefficient of what you are looking for.
C
put the coefficient of what you are looking for over one.
D
put the coefficient of what you are looking for over the sum of all the coefficients .
10) The starting materials in a reaction are called
A
endings
B
reactants
C
beginnings
D
products
*select an answer for all questions
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