Question 1

Which of the following is an ionic compound?

Accepted Answer

A) SCl2 
B) Mg3(PO4)2 
C) Cl2O 
D) CH2O 
E) PF5 
A) SCl2 
B) Mg3(PO4)2 
C) Cl2O 
D) CH2O 
E) PF5

Question 2

Identify a carboxylic acid.

Accepted Answer

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

Question 3

Determine the molecular formula of a compound that has a molar mass of 92.0 g mol-1 and an empirical formula of NO2.

Accepted Answer

A) N2O3 
B) N3O6 
C) N2O4 
D) NO2 
E) N2O5 
A) N2O3 
B) N3O6 
C) N2O4 
D) NO2 
E) N2O5

Question 4

What type of bonding is found in the compound OF2?

Accepted Answer

A) covalent bonding 
B) hydrogen bonding 
C) ionic bonding 
D) metallic bonding 
A) covalent bonding 
B) hydrogen bonding 
C) ionic bonding 
D) metallic bonding

Question 5

How many molecules are in 1.500 g of riboflavin, C17H20N4O6?

Accepted Answer

A) 1.066 × 1021 
B) 4.167 × 10-22 
C) 3.400 × 1026 
D) 1.067 × 1024 
E) 2.400 × 1021 
A) 1.066 × 1021 
B) 4.167 × 10-22 
C) 3.400 × 1026 
D) 1.067 × 1024 
E) 2.400 × 1021

Question 6

Identify the formula for barium nitrite.

Accepted Answer

A) Ba3N2 
B) BaNO3 
C) BN 
D) Ba(NO2)2 
E) B(NO2)3 
A) Ba3N2 
B) BaNO3 
C) BN 
D) Ba(NO2)2 
E) B(NO2)3

Question 7

Which one of the following compounds contains ionic bonds?

Accepted Answer

A) SrO 
B) HBr 
C) PBr3 
D) SiO2 
A) SrO 
B) HBr 
C) PBr3 
D) SiO2

Question 8

Calculate the molar mass of Al(C2H3O2)3.

Accepted Answer

A) 86.03 g mol-1 
B) 204.13 g mol-1 
C) 56.00 g mol-1 
D) 258.09 g mol-1 
E) 139.99 g mol-1 
A) 86.03 g mol-1 
B) 204.13 g mol-1 
C) 56.00 g mol-1 
D) 258.09 g mol-1 
E) 139.99 g mol-1

Question 9

Which of the following contains BOTH ionic and covalent bonds?

Accepted Answer

A) CaI2 
B) COS 
C) CaSO4 
D) SF6 
E) C2H4 
A) CaI2 
B) COS 
C) CaSO4 
D) SF6 
E) C2H4

Question 10

Match the following.

-hydrogen

Accepted Answer

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

Question 11

Hematite is the mineral form of iron(III)oxide. Calculate the number of iron ions in 20.0 kg of pure hematite.

Accepted Answer

A) 1.51 × 1026  
B) 7.54 × 1025 
C) 3.77 × 1017 
D) 6.63 × 10-27 
E) 9.62 × 1021 
A) 1.51 × 1026  
B) 7.54 × 1025 
C) 3.77 × 1017 
D) 6.63 × 10-27 
E) 9.62 × 1021

Question 12

How many molecules are in 16.61 g of acetic acid, C2H4O2?

Accepted Answer

A) 6.007 × 1026 
B) 6.0375 × 1023 
C) 1.666 × 1023 
D) 6.0375 × 1020 
E) 6.004 × 10-24 
A) 6.007 × 1026 
B) 6.0375 × 1023 
C) 1.666 × 1023 
D) 6.0375 × 1020 
E) 6.004 × 10-24

Question 13

Identify a possible molecular formula for C3H5ClO.

Accepted Answer

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

Question 14

Methane and oxygen react to form carbon dioxide and water. What mass of water is formed if 0.80 g of methane reacts with 3.2 g of oxygen to produce 2.2 g of carbon dioxide?

Accepted Answer

A) 1.8 g 
B) 2.2 g 
C) 3.7 g 
D) 4.0 g 
A) 1.8 g 
B) 2.2 g 
C) 3.7 g 
D) 4.0 g

Question 15

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 16

Identify the name for PBr3.

Accepted Answer

A) phosphorus tribromide 
B) potassium tribromide 
C) phosphorus(III)bromide 
D) phosphorus(II)bromide 
E) phosphorus bromide 
A) phosphorus tribromide 
B) potassium tribromide 
C) phosphorus(III)bromide 
D) phosphorus(II)bromide 
E) phosphorus bromide

Question 17

Identify the formula for barium hydroxide octahydrate.

Accepted Answer

A) Ba(OH)2∙8H2O 
B) BaOH∙8H2O 
C) B(OH)3∙8H2O 
D) 8Ba(OH)2∙H2O 
E) 8BaOH∙H2O 
A) Ba(OH)2∙8H2O 
B) BaOH∙8H2O 
C) B(OH)3∙8H2O 
D) 8Ba(OH)2∙H2O 
E) 8BaOH∙H2O

Question 18

Give the name for HNO2.

Accepted Answer

Question 19

Which of the following has the greatest mass?

Accepted Answer

A) 3.88 × 1022 molecules of O2 
B) 1.00 g of O2 
C) 0.0312 mol of O2 
D) All of the above have the same mass. 
A) 3.88 × 1022 molecules of O2 
B) 1.00 g of O2 
C) 0.0312 mol of O2 
D) All of the above have the same mass.

Question 20

What is the empirical formula for Hg2(NO3)2?

Accepted Answer

A) Hg2(NO3)2 
B) HgNO3 
C) Hg(NO3)2 
D) Hg2NO3 
E) Hg4(NO3)4 
A) Hg2(NO3)2 
B) HgNO3 
C) Hg(NO3)2 
D) Hg2NO3 
E) Hg4(NO3)4

Exam 3: Molecules, Compounds, and Nomenclature

Which of the following is an ionic compound?

Identify a carboxylic acid.

Determine the molecular formula of a compound that has a molar mass of 92.0 g mol-1 and an empirical formula of NO2.

What type of bonding is found in the compound OF2?

How many molecules are in 1.500 g of riboflavin, C17H20N4O6?

Identify the formula for barium nitrite.

Which one of the following compounds contains ionic bonds?

Calculate the molar mass of Al(C2H3O2)3.

Which of the following contains BOTH ionic and covalent bonds?

Match the following. -hydrogen

Hematite is the mineral form of iron(III)oxide. Calculate the number of iron ions in 20.0 kg of pure hematite.

How many molecules are in 16.61 g of acetic acid, C2H4O2?

Identify a possible molecular formula for C3H5ClO.

Methane and oxygen react to form carbon dioxide and water. What mass of water is formed if 0.80 g of methane reacts with 3.2 g of oxygen to produce 2.2 g of carbon dioxide?

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

Identify the name for PBr3.

Identify the formula for barium hydroxide octahydrate.

Give the name for HNO2.

Which of the following has the greatest mass?

What is the empirical formula for Hg2(NO3)2?

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

Determine the molecular formula of a compound that has a molar mass of 92.0 g mol^-1 and an empirical formula of NO₂.

What type of bonding is found in the compound OF₂?

How many molecules are in 1.500 g of riboflavin, C₁₇H₂₀N₄O₆?

Calculate the molar mass of Al(C₂H₃O₂)₃.

How many molecules are in 16.61 g of acetic acid, C₂H₄O₂?

Identify a possible molecular formula for C₃H₅ClO.

Identify the name for PBr₃.

Give the name for HNO₂.

What is the empirical formula for Hg₂(NO₃)₂?