Question 1

Calculate the number of oxygen atoms in 1.187 g of nickel(II) carbonate.

Accepted Answer

A)  1.807 × 1026 
B)  5.535 × 1023 
C)  6.022 × 1021 
D)  1.282 × 1022 
E)  1.807 × 1022 
A)  1.807 × 1026 
B)  5.535 × 1023 
C)  6.022 × 1021 
D)  1.282 × 1022 
E)  1.807 × 1022

Question 2

Which one of the following compounds contains ionic bonds?

Accepted Answer

A)  SrO 
B)  H Br 
C)  P Br3 
D)  SiO2 
A)  SrO 
B)  H Br 
C)  P Br3 
D)  SiO2

Question 3

Which of the following is a molecular element?

Accepted Answer

A)  Kr 
B)  Ag 
C)  S 
D)  Mg 
E)  Ti 
A)  Kr 
B)  Ag 
C)  S 
D)  Mg 
E)  Ti

Question 4

Identify the name for Ca3(PO4)2.

Accepted Answer

A)  calcium(III) phosphite 
B)  calcium(II) phosphite 
C)  calcium phosphate 
D)  tricalcium phosphorustetraoxide 
E)  calcium phosphite 
A)  calcium(III) phosphite 
B)  calcium(II) phosphite 
C)  calcium phosphate 
D)  tricalcium phosphorustetraoxide 
E)  calcium phosphite

Question 5

Which of the following is a possible molecular formula for a compound with an empirical formula C4H4O?

Accepted Answer

A)  C8H8O2 
B)  C12H12O2 
C)  C2H2O 
D)  C8H8O 
A)  C8H8O2 
B)  C12H12O2 
C)  C2H2O 
D)  C8H8O

Question 6

Match the following.
-chlorine

Accepted Answer

A) Ne(g) 
B) Cl2(g) 
C) Ca2(s) 
D) Ne2(g) 
E) Ca(s)
F)H2(g)
G)I2(s)
H)H(g)
I)Cl(g)
J)O(g)
K)O2(g)
L)I(s) 
A) Ne(g) 
B) Cl2(g) 
C) Ca2(s) 
D) Ne2(g) 
E) Ca(s)
F)H2(g)
G)I2(s)
H)H(g)
I)Cl(g)
J)O(g)
K)O2(g)
L)I(s)

Question 7

Combustion analysis of an unknown hydrocarbon produced the following results: C 59.96%, H 13.42%, and O 26.62%. Determine the empirical formula.

Accepted Answer

A)  C3H8O 
B)  C8H8O2 
C)  C5H8O4 
D)  C6H16O4 
E)  C9H16O2 
A)  C3H8O 
B)  C8H8O2 
C)  C5H8O4 
D)  C6H16O4 
E)  C9H16O2

Question 8

Determine the mass percent (to the hundredths place) of H in sodium bicarbonate (NaHCO3).

Accepted Answer

Question 9

Identify the name for FeS.

Accepted Answer

A)  iron(I) sulfate 
B)  iron(I) sulfide 
C)  iron(II) sulfide 
D)  iron(II) sulfate 
E)  iron sulfide 
A)  iron(I) sulfate 
B)  iron(I) sulfide 
C)  iron(II) sulfide 
D)  iron(II) sulfate 
E)  iron sulfide

Question 10

Determine the name for H2CO3.

Accepted Answer

A)  carbonous acid 
B)  dihydrogen carbonate 
C)  carbonic acid 
D)  hydrocarbonic acid 
E)  hydrocarbide acid 
A)  carbonous acid 
B)  dihydrogen carbonate 
C)  carbonic acid 
D)  hydrocarbonic acid 
E)  hydrocarbide acid

Question 11

Identify the correct formula for sodium chlorate.

Accepted Answer

A)  NaClO 
B)  NaClO2 
C)  NaClO3 
D)  NaClO4 
A)  NaClO 
B)  NaClO2 
C)  NaClO3 
D)  NaClO4

Question 12

Identify an amine.

Accepted Answer

A)  CH3CH2OCH2CH3 
B)  CH3CH2OH 
C)  CH3CH2NH2 
D)  CH3CH2CH2CH3 
E)  CH3COOH 
A)  CH3CH2OCH2CH3 
B)  CH3CH2OH 
C)  CH3CH2NH2 
D)  CH3CH2CH2CH3 
E)  CH3COOH

Question 13

Which of the following is an acid in aqueous solution?

Accepted Answer

A)  CaCO3 
B)  HClO2 
C)  CH3OCH3 
D)  NaCl 
E)  KNO3 
A)  CaCO3 
B)  HClO2 
C)  CH3OCH3 
D)  NaCl 
E)  KNO3

Question 14

How many moles of N2O3 contain 2.55 × 1024 oxygen atoms?

Accepted Answer

A)  1.41 moles N2O3 
B)  4.23 moles N2O3 
C)  12.7 moles N2O3 
D)  7.87 moles N2O3 
E)  2.82 moles N2O3 
A)  1.41 moles N2O3 
B)  4.23 moles N2O3 
C)  12.7 moles N2O3 
D)  7.87 moles N2O3 
E)  2.82 moles N2O3

Question 15

What is the mass (in kg) of 6.89 × 1025 molecules of CO2? The molar mass of CO2 is 44.01 g mol-1.

Accepted Answer

A)  3.85 kg 
B)  5.04 kg 
C)  2.60 kg 
D)  3.03 kg 
E)  6.39 kg 
A)  3.85 kg 
B)  5.04 kg 
C)  2.60 kg 
D)  3.03 kg 
E)  6.39 kg

Question 16

________ bonds are formed between a metal atom and nonmetal atom, where electrons are transferred from the metal atom to the non-metal atom.

Accepted Answer

A)  Ionic 
B)  Hydrogen 
C)  Metallic 
D)  Peptide 
E)  Covalent 
A)  Ionic 
B)  Hydrogen 
C)  Metallic 
D)  Peptide 
E)  Covalent

Question 17

Which of the following statements is FALSE?

Accepted Answer

A)  Combustion analysis can be used to obtain empirical formulas of unknown hydrocarbon compounds. 
B)  Hydrocarbons are organic compounds. 
C)  All organic compounds can be classified as hydrocarbons with one or more functional groups. 
D)  An empirical formula gives the absolute number of atoms in a molecule. 
E)  The empirical and the molecular formulas of a compound can be determined based on the mass percent composition and molar mass of the compound. 
A)  Combustion analysis can be used to obtain empirical formulas of unknown hydrocarbon compounds. 
B)  Hydrocarbons are organic compounds. 
C)  All organic compounds can be classified as hydrocarbons with one or more functional groups. 
D)  An empirical formula gives the absolute number of atoms in a molecule. 
E)  The empirical and the molecular formulas of a compound can be determined based on the mass percent composition and molar mass of the compound.

Question 18

Match the following.
-iodine

Accepted Answer

A) Ne(g) 
B) Cl2(g) 
C) Ca2(s) 
D) Ne2(g) 
E) Ca(s)
F)H2(g)
G)I2(s)
H)H(g)
I)Cl(g)
J)O(g)
K)O2(g)
L)I(s) 
A) Ne(g) 
B) Cl2(g) 
C) Ca2(s) 
D) Ne2(g) 
E) Ca(s)
F)H2(g)
G)I2(s)
H)H(g)
I)Cl(g)
J)O(g)
K)O2(g)
L)I(s)

Question 19

The ion IO2- is named ________.

Accepted Answer

A)  iodate ion 
B)  iodite ion 
C)  iodine dioxide ion 
D)  iodine(II) oxide ion 
A)  iodate ion 
B)  iodite ion 
C)  iodine dioxide ion 
D)  iodine(II) oxide ion

Question 20

Which of the following is an acid in aqueous solution?

Accepted Answer

A)  NH3 
B)  NaF 
C)  Ca(C2H3O2)2 
D)  HI 
E)  KCl 
A)  NH3 
B)  NaF 
C)  Ca(C2H3O2)2 
D)  HI 
E)  KCl

Exam 3: Molecules, Compounds, and Nomenclature

Calculate the number of oxygen atoms in 1.187 g of nickel(II) carbonate.

Which one of the following compounds contains ionic bonds?

Which of the following is a molecular element?

Identify the name for Ca3(PO4)2.

Which of the following is a possible molecular formula for a compound with an empirical formula C4H4O?

Match the following. -chlorine

Combustion analysis of an unknown hydrocarbon produced the following results: C 59.96%, H 13.42%, and O 26.62%. Determine the empirical formula.

Determine the mass percent (to the hundredths place) of H in sodium bicarbonate (NaHCO3).

Identify the name for FeS.

Determine the name for H2CO3.

Identify the correct formula for sodium chlorate.

Identify an amine.

Which of the following is an acid in aqueous solution?

How many moles of N2O3 contain 2.55 × 1024 oxygen atoms?

What is the mass (in kg) of 6.89 × 1025 molecules of CO2? The molar mass of CO2 is 44.01 g mol-1.

________ bonds are formed between a metal atom and nonmetal atom, where electrons are transferred from the metal atom to the non-metal atom.

Which of the following statements is FALSE?

Match the following. -iodine

The ion IO2- is named ________.

Which of the following is an acid in aqueous solution?

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry Ii: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Identify the name for Ca₃(PO₄)₂.

Which of the following is a possible molecular formula for a compound with an empirical formula C₄H₄O?

Determine the mass percent (to the hundredths place) of H in sodium bicarbonate (NaHCO₃).

Determine the name for H₂CO₃.

How many moles of N₂O₃ contain 2.55 × 10²⁴ oxygen atoms?

What is the mass (in kg) of 6.89 × 10²⁵molecules of CO₂? The molar mass of CO₂ is 44.01 g mol^-1.

The ion IO₂^- is named ________.