Question 1

The compound Cu(I O3 )2,is named

Accepted Answer

A) copper iodate(II). 
B) copper(I)iodate. 
C) copper(I)iodate(II). 
D) copper(II)iodate. 
A) copper iodate(II). 
B) copper(I)iodate. 
C) copper(I)iodate(II). 
D) copper(II)iodate.

Question 2

Identify the charge, X, on the acetate ion C2H3  OX2

Accepted Answer

A) +1 
B) +2 
C) +3 
D) -2 
E) -1 
A) +1 
B) +2 
C) +3 
D) -2 
E) -1

Question 3

How many S   ions are contained in 99.6 mg of Na2SO3? The molar mass of Na2SO3 is 126.05 g mol-1.

Accepted Answer

A) 1.52 × 1027 S   ions 
B) 4.76 × 1020 S   ions 
C) 2.10 × 1021 S   ions 
D) 1.05 × 1021 S   ions 
E) 9.52 × 1020 S   ions 
A) 1.52 × 1027 S   ions 
B) 4.76 × 1020 S   ions 
C) 2.10 × 1021 S   ions 
D) 1.05 × 1021 S   ions 
E) 9.52 × 1020 S   ions

Question 4

How many atoms of oxygen are contained in 47.6 g of Al2(CO3)3? The molar mass of Al2(CO3)3 is 233.99 g mol-1.

Accepted Answer

A) 1.23 × 1023 O atoms 
B) 2.96 × 1024 O atoms 
C) 2.87 × 1025 O atoms 
D) 1.10 × 1024 O atoms 
E) 3.68 × 1023 O atoms 
A) 1.23 × 1023 O atoms 
B) 2.96 × 1024 O atoms 
C) 2.87 × 1025 O atoms 
D) 1.10 × 1024 O atoms 
E) 3.68 × 1023 O atoms

Question 5

What is the correct formula for lead (II)chloride?

Accepted Answer

A) LdCl4 
B) SbCl4 
C) PbCl2 
D) PbCl4 
E) LaCl3 
A) LdCl4 
B) SbCl4 
C) PbCl2 
D) PbCl4 
E) LaCl3

Question 6

What is the empirical formula of a compound that is 62.0% C, 10.4% H, and 27.5% O by mass?

Accepted Answer

A) C3HO 
B) C6HO3 
C) C6H12O2 
D) C5H10O2 
E) C3H6O 
A) C3HO 
B) C6HO3 
C) C6H12O2 
D) C5H10O2 
E) C3H6O

Question 7

Which of the following elements has the LEAST tendency to form an ion?

Accepted Answer

A) Ca 
B) K 
C) Kr 
D) Se 
A) Ca 
B) K 
C) Kr 
D) Se

Question 8

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 9

Determine the name for aqueous HClO3.

Accepted Answer

A) hydrochloric acid 
B) hydrochlorous acid 
C) chlorate acid 
D) chloric acid 
E) perchloric acid 
A) hydrochloric acid 
B) hydrochlorous acid 
C) chlorate acid 
D) chloric acid 
E) perchloric acid

Question 10

Which of the following exists as a polyatomic molecule?

Accepted Answer

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

Question 11

Which one of the following is NOT an empirical formula?

Accepted Answer

A) CHO 
B) CH2O 
C) C2H4O 
D) C2H4O2 
A) CHO 
B) CH2O 
C) C2H4O 
D) C2H4O2

Question 12

Identify the formula for magnesium nitrate hexahydrate.

Accepted Answer

A) Mg(NO3)2∙5H2O 
B) Mg(NO3)2∙6H2O 
C) Mg(NO3)2∙7H2O 
D) MgNO3∙5H2O 
E) MgNO3∙6H2O 
A) Mg(NO3)2∙5H2O 
B) Mg(NO3)2∙6H2O 
C) Mg(NO3)2∙7H2O 
D) MgNO3∙5H2O 
E) MgNO3∙6H2O

Question 13

Which of the following is one possible form of pentane?

Accepted Answer

A) CH3CH2CH2CH2CH3 
B) CH3CH=CHCH2CH3 
C) CH3CH2CH2CH2CH2CH3 
D) CH3CH2CH2CH2CH2NH2 
E) CH3CH2-O-CH2CH2CH3 
A) CH3CH2CH2CH2CH3 
B) CH3CH=CHCH2CH3 
C) CH3CH2CH2CH2CH2CH3 
D) CH3CH2CH2CH2CH2NH2 
E) CH3CH2-O-CH2CH2CH3

Question 14

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 15

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 16

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 17

What is the charge on the Cr ions in Cr2O3?

Accepted Answer

A) 2- 
B) 1+ 
C) 2+ 
D) 3+ 
A) 2- 
B) 1+ 
C) 2+ 
D) 3+

Question 18

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

Exam 3: Molecules, Compounds, and Nomenclature

The compound Cu(I O3 )2,is named

Identify the charge, X, on the acetate ion C2H3 OX2

How many S ions are contained in 99.6 mg of Na2SO3? The molar mass of Na2SO3 is 126.05 g mol-1.

How many atoms of oxygen are contained in 47.6 g of Al2(CO3)3? The molar mass of Al2(CO3)3 is 233.99 g mol-1.

What is the correct formula for lead (II)chloride?

What is the empirical formula of a compound that is 62.0% C, 10.4% H, and 27.5% O by mass?

Which of the following elements has the LEAST tendency to form an ion?

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 name for aqueous HClO3.

Which of the following exists as a polyatomic molecule?

Which one of the following is NOT an empirical formula?

Identify the formula for magnesium nitrate hexahydrate.

Which of the following is one possible form of pentane?

Which of the following is a molecular element?

Which of the following is an acid in aqueous solution?

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

What is the charge on the Cr ions in Cr2O3?

Identify the name for LiNO3∙3H2O.

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 Metallury

Transition Metals and Coordination Compounds

Filters

The compound Cu(IO₃ )₂,is named

Identify the charge, X, on the acetate ion C₂H₃ O^X₂

How many S ions are contained in 99.6 mg of Na₂SO₃? The molar mass of Na₂SO₃is 126.05 g mol^-1.

How many atoms of oxygen are contained in 47.6 g of Al₂(CO₃)₃? The molar mass of Al₂(CO₃)₃is 233.99 g mol^-1.

Determine the name for aqueous HClO₃.

What is the charge on the Cr ions in Cr₂O₃?

Identify the name for LiNO₃∙3H₂O.