Question 1

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 2

Determine the empirical formula for a compound that is 36.86% N and 63.14% O by mass.

Accepted Answer

A) NO 
B) N2O 
C) NO2 
D) N2O3 
E) NO3 
A) NO 
B) N2O 
C) NO2 
D) N2O3 
E) NO3

Question 3

Calculate the mass percent composition of sulfur in Al2(SO4)3.

Accepted Answer

A) 28.11% 
B) 9.372% 
C) 42.73% 
D) 21.38% 
E) 35.97% 
A) 28.11% 
B) 9.372% 
C) 42.73% 
D) 21.38% 
E) 35.97%

Question 4

Combustion analysis of an unknown hydrocarbon produced the following results: C 52.14%,H 13.13%,O 34.73%.Determine the empirical formula.

Accepted Answer

A) C4H8O2 
B) C4H12O2 
C) C2H6O 
D) C4H6O2 
E) C6H8O4 
A) C4H8O2 
B) C4H12O2 
C) C2H6O 
D) C4H6O2 
E) C6H8O4

Question 5

Identify a possible molecular formula for a compound with an empirical formula C3H5ClO.

Accepted Answer

A) C6H10ClO2 
B) C5H10Cl2O2 
C) C6H10Cl2O2 
D) C6H10O2 
E) C6H12Cl2O2 
A) C6H10ClO2 
B) C5H10Cl2O2 
C) C6H10Cl2O2 
D) C6H10O2 
E) C6H12Cl2O2

Question 6

An ionic bond is best described as

Accepted Answer

A) the sharing of electrons. 
B) the transfer of electrons from one atom to another. 
C) the attraction that holds the atoms together in a polyatomic ion. 
D) the attraction between two nonmetal atoms. 
E) the attraction between two metal atoms. 
A) the sharing of electrons. 
B) the transfer of electrons from one atom to another. 
C) the attraction that holds the atoms together in a polyatomic ion. 
D) the attraction between two nonmetal atoms. 
E) the attraction between two metal atoms.

Question 7

The chemical formula for lithium peroxide is

Accepted Answer

A) LiOH. 
B) LiO2. 
C) Li2O. 
D) Li2O2. 
A) LiOH. 
B) LiO2. 
C) Li2O. 
D) Li2O2.

Question 8

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 9

Identify the name for LiNO3∙3H2O.

Accepted Answer

A) lithium nitrate 
B) lithium nitrate hemihydrate 
C) lithium nitrate monohydrate 
D) lithium nitrate dihydrate 
E) lithium nitrate trihydrate 
A) lithium nitrate 
B) lithium nitrate hemihydrate 
C) lithium nitrate monohydrate 
D) lithium nitrate dihydrate 
E) lithium nitrate trihydrate

Question 10

Which of the following is a formula for the compound disulfur tetrafluoride?

Accepted Answer

A) SF4 
B) 2SF4 
C) S2F4 
D) SF6 
E) S2F2 
A) SF4 
B) 2SF4 
C) S2F4 
D) SF6 
E) S2F2

Question 11

Which of the following exists as a diatomic molecule?

Accepted Answer

A) N 
B) C 
C) P 
D) Na 
E) Ne 
A) N 
B) C 
C) P 
D) Na 
E) Ne

Question 12

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 13

Rb2S is named

Accepted Answer

A) rubidium disulfide. 
B) rubidium sulfide. 
C) rubidium(II)sulfide. 
D) rubidium sulfur. 
A) rubidium disulfide. 
B) rubidium sulfide. 
C) rubidium(II)sulfide. 
D) rubidium sulfur.

Question 14

What is the molar mass of 1-butene if 5.38 × 1016 molecules of 1-butene weigh 5.00 μg?

Accepted Answer

A) 56.0 g mol-1 
B) 178 g mol-1 
C) 224 g mol-1 
D) 447 g mol-1 
A) 56.0 g mol-1 
B) 178 g mol-1 
C) 224 g mol-1 
D) 447 g mol-1

Question 15

Determine the molecular formula of a compound that is 49.48% carbon,5.19% hydrogen,28.85% nitrogen,and 16.48% oxygen.The molecular weight is 194.19 g mol-1.

Accepted Answer

A) C8H12N4O2 
B) C4H5N2O 
C) C8H10N4O2 
D) C8H10N2O 
A) C8H12N4O2 
B) C4H5N2O 
C) C8H10N4O2 
D) C8H10N2O

Question 16

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 17

Which one of the following contains 39% carbon by mass?

Accepted Answer

A) C2H2 
B) CH4 
C) CH3NH2 
D) CO2 
A) C2H2 
B) CH4 
C) CH3NH2 
D) CO2

Question 18

Calculate the mass percent composition of lithium in Li3PO4.

Accepted Answer

A) 26.75% 
B) 17.98% 
C) 30.72% 
D) 55.27% 
E) 20.82% 
A) 26.75% 
B) 17.98% 
C) 30.72% 
D) 55.27% 
E) 20.82%

Question 19

Identify the sulfite ion.

Accepted Answer

A) $\mathrm { SO } _ { 3 } ^ { 2 - }$ 
B) $\mathrm { HSO } _ { 3 } ^ { - }$ 
C)  $s ^ { 2 - }$ 
D) $\mathrm { SO } _ { 4 } ^ { 2 - }$ 
E) $\mathrm { HSO } _ { 4 } ^ { - }$ 
A) $\mathrm { SO } _ { 3 } ^ { 2 - }$ 
B) $\mathrm { HSO } _ { 3 } ^ { - }$ 
C)  $s ^ { 2 - }$ 
D) $\mathrm { SO } _ { 4 } ^ { 2 - }$ 
E) $\mathrm { HSO } _ { 4 } ^ { - }$

Question 20

Identify the formula for the compound formed between potassium and sulfur.

Accepted Answer

A) KS 
B) KS2 
C) K2S 
D) K2SO3 
E) K3S2 
A) KS 
B) KS2 
C) K2S 
D) K2SO3 
E) K3S2

Exam 3: Molecules,compounds,and Nomenclature

Determine the name for H2CO3.

Determine the empirical formula for a compound that is 36.86% N and 63.14% O by mass.

Calculate the mass percent composition of sulfur in Al2(SO4)3.

Combustion analysis of an unknown hydrocarbon produced the following results: C 52.14%,H 13.13%,O 34.73%.Determine the empirical formula.

Identify a possible molecular formula for a compound with an empirical formula C3H5ClO.

An ionic bond is best described as

The chemical formula for lithium peroxide is

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

Identify the name for LiNO3∙3H2O.

Which of the following is a formula for the compound disulfur tetrafluoride?

Which of the following exists as a diatomic molecule?

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

Rb2S is named

What is the molar mass of 1-butene if 5.38 × 1016 molecules of 1-butene weigh 5.00 μg?

Determine the molecular formula of a compound that is 49.48% carbon,5.19% hydrogen,28.85% nitrogen,and 16.48% oxygen.The molecular weight is 194.19 g mol-1.

The ion IO2- is named

Which one of the following contains 39% carbon by mass?

Calculate the mass percent composition of lithium in Li3PO4.

Identify the sulfite ion.

Identify the formula for the compound formed between potassium and sulfur.

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

Determine the name for H₂CO₃.

Calculate the mass percent composition of sulfur in Al₂(SO₄)₃.

Identify a possible molecular formula for a compound with an empirical formula C₃H₅ClO.

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

Identify the name for LiNO₃∙3H₂O.

Rb₂S is named

What is the molar mass of 1-butene if 5.38 × 10¹⁶ molecules of 1-butene weigh 5.00 μg?

Determine the molecular formula of a compound that is 49.48% carbon,5.19% hydrogen,28.85% nitrogen,and 16.48% oxygen.The molecular weight is 194.19 g mol^-1.

The ion IO₂^- is named

Calculate the mass percent composition of lithium in Li₃PO₄.