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CHM 1025C Spring Term 2003
Final Exam
Module Five


Multiple Choice [Chapters 8, 9, and 10]

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Module Five

Module 5 Test Masters:

Mary Alcott (maliceall@juno.com)

Juliana Allebach (Ruuufie@aol.com)

John Taylor (johtaylo@fscj.edu) [Template Author]


Multiple Choice [Chapters 8,9,and 10]


Question 1

How many Krypton atoms are in 2.50 mol of Kr gas?
a) 1.51 X 1022 atoms
b) 1.51 X 1023 atoms
c) 1.51 X 1024 atoms
d) 2.41 X 1024 atoms

Question 2

How many moles of bromine correspond to 1.51 X 1024 Br2 molecules?

a) 0.251 mol
b) 0.399 mol
c) 2.51 mol
d) 3.99 mol
e) 25.1 mol

Question 3

What is the molar mass of aspirin, C9H8O4?

a) 116.0 g/mol
b) 180.0 g/mol
c) 188.0 g/mol
d) 244.0 g/mol

Question 4

Phenacyl chloride is a riot control gas having the formula C7H7OCl. What is the percentage of carbon in the compound.

a) 4.91%
b) 8.42%
c) 11.2%
d) 24.9%
e) 58.9%

Question 5

If 0.250 mol of Cr combines with 0.375 mol of O, what is the empirical formula of chromium oxide?

a) CrO
b) Cr2O3
c) Cr2O5
d) Cr3O2
e) Cr5O2

Question 6

What are the standard conditions of temperature and pressure for a gas?

a) 0 oC and 0 atm
b) OoC and 1 atm
c) O K and 1 atm
d) 273oC and 1 atm
e) 273 K and 0 atm

Question 7

What is the coefficient of hydrogen after balancing the following equation?

___N2(g) + ___H2(g) --> __NH3(g)

a) 1
b) 2
c) 3
d) 4
e) none of the above

Question 8

What is the coefficient of hydrogen after balancing the following equation?

__Pb(s) + __HNO3(aq) --> __Pb(NO3)4(aq) + __H2(g)

a) 1
b) 2
c) 3
d) 4
e) none of the above

Question 9

Which of the following metals reacts with aqueous FeSO4?

Partial Activity Series: Fe > Co > (H) > Cu > Ag

a) Co
b) Cu
c) Ag
d) All of the above
e) none of the above

Question 10

What are the products from the following neutralization reaction?

HNO3(aq) + Ba(OH)2(aq) -->

a) Ba3N2 and H2O
b) Ba(NO2)2 and H2
c) Ba(NO2)2 and H2O
d) Ba(NO3)2 and H2
e) Ba(NO3)2 and H2O

Question 11

What is the term for a substance that increases the rate of a chemical reaction?

a) accelerator
b) catalyst
c) inhibitor
d) reactant
e) none of the above

Question 12

What term refers to an insoluble substance produced by a reaction in aqueous solution?

a) colloid
b) precipitate
c) product
d) salt
e) none of the above

Question 13

Octane, C8H18, is a major component in gasoline. What is the coefficient of oxygen in the balanced equation for the combustion of octane?

__C8H18(g) + __O2(g) --> __CO2(g) + __H2O(g)

a) 17
b) 25
c) 34
d) 50
e) none of the above

Question 14

How many moles of oxygen are produced from the decomposition of O.250 mol of hydrogen peroxide according to the following reaction?

__H2O2(l) --> __H2O(l) + __O2(g)

a) 0.125 mol
b) 0.250 mol
c) 0.500 mol
d) 1.00 mol
e) none of the above

Question 15

Calculate the mass of insoluble calcium phosphate (310.3 g/mol) produced from the reaction of 0.555g of calcium chloride (111.1 g/mol)

__CaCl2(s) + __Na3PO4(aq) --> __Ca3(PO4)2(s) + __NaCl(aq)

a) 0.0662 g
b) 0.517 g
c) 0.596 g
d) 1.55 g
e) 4.65 g

Question 16

Which of the following strategy maps illustrates mass-mass stoichiometry?

a) g reactant --> g product --> mol product --> mol reactant
b) g reactant --> mol product --> mol reactant --> g product
c) g reactant --> mol product --> g product --> mol reactant
d) g reactant --> mol reactant--> g product --> mol product
e) g reactant --> mol reactant--> mol product --> g product


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