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Samuels CHEM Stoichiometry
Test Description: Stoichiometry
Instructions: Answer all questions to get your test result.
1) What tells us the simplest ratio of atoms in a compound?
A
ionic compound
B
empirical formula
C
molecular formula
D
binary compound
2) LiF has what name?
A
lithium (II) fluoride
B
lithium fluoride
C
lithium nonafluoride
D
lithium fluorine
3) FeCl3 has what name?
A
iron (II) chloride
B
monoiron chlorine
C
iron (III) trichloride
D
iron (III) chloride
4) N2O4 has what name?
A
dinitrogen tetraoxide
B
nitrogen (II) oxide
C
nitrogen oxide
D
dinitrogen pentaoxide
5) Which of the following is Avogadro’s number?
A
1.026 x 10^20
B
1.0026 x 10^20
C
6.002 x 10^23
D
6.01 x 10^23
6) This law states that the given compound will always have the same ratio or mass percent
A
Law of Absolutes
B
Law of Thermodynamics
C
Law of Definite Composition
D
Law of Bonding
7) Ions that are composed of 2 or more elements are called
A
polyatomic ions
B
atomic ions
C
molecular ions
D
transition ions
8) What is the molecular mass of H2O if H = 1 and O = 16.
A
18 g/mol
B
17 g/mol
C
33 g/mol
D
16 g/mol
9) AB creates A + B is an example of
A
combination reaction
B
decomposition reaction
C
single displacement reaction
D
double displacement reaction
10) AB + CD creates AD + BC is an example of
A
double displacement reaction
B
decomposition reaction
C
combination reaction
D
single displacement reaction
*select an answer for all questions
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