Question 1

What is the name of the following compound: KHCO3?

Accepted Answer

potassium hydrogen c

Question 2

List how many of each type of element are present in one molecule of sucrose, C12H22O11.

Accepted Answer

12 carbon,

Question 3

The formula, N2, is used to represent elemental nitrogen.

Accepted Answer

A) True 
 B)False

Question 4

How many atoms are there in one formula unit of (NH4)4Fe(CN)6?

Accepted Answer

A) 15 
B) 25 
C) 28 
D) 33 
E) 35 
A) 15 
B) 25 
C) 28 
D) 33 
E) 35

Question 5

Selenium is found in which group of the periodic table?

Accepted Answer

The answer of Selenium is found in which group of...

Question 6

How many electrons are lost when zinc forms a cation?

Accepted Answer

The answer of How many electrons are lost when zinc...

Question 7

What is the name of the following compound: Ba(OH)2?

Accepted Answer

Question 8

The number of atoms in one formula unit of the substance (NH4)3Co(CN)6 is

Accepted Answer

A) 21 
B) 26 
C) 28 
D) 31 
E) 33 
A) 21 
B) 26 
C) 28 
D) 31 
E) 33

Question 9

What are the likely formulas of three different hydrocarbons each with 12 hydrogen atoms?

Accepted Answer

A) C12H12; COH12 ; C5H12 
B) C12H12; C7H12 ; CH12 
C) C5H12; C6H12; C7H12 
D) C12H12; C9H12 ; CH12 
E) CH12; C12H12 ; C8H12 
A) C12H12; COH12 ; C5H12 
B) C12H12; C7H12 ; CH12 
C) C5H12; C6H12; C7H12 
D) C12H12; C9H12 ; CH12 
E) CH12; C12H12 ; C8H12

Question 10

The formula of the compound formed from the strontium ion and chromate ion is

Accepted Answer

A) SrCrO3. 
B) SrCrO4. 
C) Sr2CrO4. 
D) Sr(CrO4)2. 
E) Sr2(CrO4)3. 
A) SrCrO3. 
B) SrCrO4. 
C) Sr2CrO4. 
D) Sr(CrO4)2. 
E) Sr2(CrO4)3.

Question 11

What is the name for the compound PBr3?

Accepted Answer

phosphorus

Question 12

What is the total number of atoms represented by the following formula? Mg5Al(OH)8AlSi3O10

Accepted Answer

A) 36 
B) 28 
C) 8 
D) 24 
E) 42 
A) 36 
B) 28 
C) 8 
D) 24 
E) 42

Question 13

How many protons, neutrons, and electrons are in the anion of the compound, CrCl337?

Accepted Answer

A) 17 protons, 20 neutrons, and 18 electrons 
B) 18 protons, 23 neutrons, and 21 electrons 
C) 21 protons, 21 neutrons, and 16 electrons 
D) 14 protons, 23 neutrons, and 17 electrons 
E) 17 protons, 17 neutrons, and 20 electrons 
A) 17 protons, 20 neutrons, and 18 electrons 
B) 18 protons, 23 neutrons, and 21 electrons 
C) 21 protons, 21 neutrons, and 16 electrons 
D) 14 protons, 23 neutrons, and 17 electrons 
E) 17 protons, 17 neutrons, and 20 electrons

Question 14

List the ions, including the number of each type, present in the compound, Fe2(C2O4)3·2H2O. Hint: Think about the requirements for forming ionic compounds and how this affects the number of each ion present in the formula.

Accepted Answer

A) 2Fe3+, 6C4+, 12O2- 
B) 3Fe4+, 2CO43-; 2OH-  
C) 3Fe2+, 3C2O42-  
D) 3Fe4+, 2CO43-; 2H2O2-  
E) 2Fe3+, 3CO22-; 2 H2O  
A) 2Fe3+, 6C4+, 12O2- 
B) 3Fe4+, 2CO43-; 2OH-  
C) 3Fe2+, 3C2O42-  
D) 3Fe4+, 2CO43-; 2H2O2-  
E) 2Fe3+, 3CO22-; 2 H2O

Question 15

How many electrons are lost when aluminum forms a cation?

Accepted Answer

The answer of How many electrons are lost when aluminum...

Question 16

How many protons and electrons are in the S2- ion?

Accepted Answer

16 protons

Question 17

What is the name of the compound, N2O5(g)?

Accepted Answer

A) nitrogen oxide 
B) dinitrogen tetroxide 
C) nitrogen pentoxide 
D) dinitrogen pentoxide 
E) trinitrogen pentoxide 
A) nitrogen oxide 
B) dinitrogen tetroxide 
C) nitrogen pentoxide 
D) dinitrogen pentoxide 
E) trinitrogen pentoxide

Question 18

Aluminum reacts with another element, which we will represent by the symbol Gr, to form a compound whose formula is AlGr. Element Gr is most probably

Accepted Answer

A) an actinide element. 
B) group 2A element. 
C) a chalcogen. 
D) group 5A element. 
E) a transition metal. 
A) an actinide element. 
B) group 2A element. 
C) a chalcogen. 
D) group 5A element. 
E) a transition metal.

Question 19

Select the examples in which the formulas do not correctly match the names of the compounds indicated.   Hint: Write the correct name of each formula without looking at the names and then compare it to the choices.

Accepted Answer

A) II only 
B) II and III 
C) I, II and IV 
D) I and IV 
E) II, III and IV 
A) II only 
B) II and III 
C) I, II and IV 
D) I and IV 
E) II, III and IV

Question 20

When interpreting the formula, CO(NH2)2, it should be noted that the group of atoms within the parentheses occurs twice.

Accepted Answer

A) True 
 B)False

Exam 3: Elements, Compounds, and the Periodic Table

What is the name of the following compound: KHCO3?

List how many of each type of element are present in one molecule of sucrose, C12H22O11.

The formula, N2, is used to represent elemental nitrogen.

How many atoms are there in one formula unit of (NH4)4Fe(CN)6?

Selenium is found in which group of the periodic table?

How many electrons are lost when zinc forms a cation?

What is the name of the following compound: Ba(OH)2?

The number of atoms in one formula unit of the substance (NH4)3Co(CN)6 is

What are the likely formulas of three different hydrocarbons each with 12 hydrogen atoms?

The formula of the compound formed from the strontium ion and chromate ion is

What is the name for the compound PBr3?

What is the total number of atoms represented by the following formula? Mg5Al(OH)8AlSi3O10

How many protons, neutrons, and electrons are in the anion of the compound, CrCl337?

List the ions, including the number of each type, present in the compound, Fe2(C2O4)3·2H2O. Hint: Think about the requirements for forming ionic compounds and how this affects the number of each ion present in the formula.

How many electrons are lost when aluminum forms a cation?

How many protons and electrons are in the S2- ion?

What is the name of the compound, N2O5(g)?

Aluminum reacts with another element, which we will represent by the symbol Gr, to form a compound whose formula is AlGr. Element Gr is most probably

Select the examples in which the formulas do not correctly match the names of the compounds indicated. Hint: Write the correct name of each formula without looking at the names and then compare it to the choices.

When interpreting the formula, CO(NH2)2, it should be noted that the group of atoms within the parentheses occurs twice.

A Very Brief History of Chemistry

Scientific Measurements

The Mole and Stoichiometry

Molecular View of Reactions in Aqueous Solutions

Oxidation-Reduction Reactions

Energy and Chemical Change

The Quantum Mechanical Atom

The Basics of Chemical Bonding

Theories of Bonding and Structure

Properties of Gases

Intermolecular Attractions and the Properties of Liquids and Solids

Mixtures at the Molecular Level: Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases, a Molecular Look

Acid-Base Equilibria in Aqueous Solutions

Solubility and Simultaneous Equilibria

Thermodynamics

Electrochemistry

Nuclear Reactions and Their Role in Chemistry

Metal Complexes

Organic Compounds, Polymers, and Biochemicals

Filters

What is the name of the following compound: KHCO₃?

List how many of each type of element are present in one molecule of sucrose, C₁₂H₂₂O₁₁.

The formula, N₂, is used to represent elemental nitrogen.

How many atoms are there in one formula unit of (NH₄)₄Fe(CN)₆?

What is the name of the following compound: Ba(OH)₂?

The number of atoms in one formula unit of the substance (NH₄)₃Co(CN)₆ is

What is the name for the compound PBr₃?

What is the total number of atoms represented by the following formula? Mg₅Al(OH)₈AlSi₃O₁₀

How many protons, neutrons, and electrons are in the anion of the compound, CrCl₃³⁷?

List the ions, including the number of each type, present in the compound, Fe₂(C₂O₄)₃·2H₂O. Hint: Think about the requirements for forming ionic compounds and how this affects the number of each ion present in the formula.

How many protons and electrons are in the S^2- ion?

What is the name of the compound, N₂O₅(g)?

When interpreting the formula, CO(NH₂)₂, it should be noted that the group of atoms within the parentheses occurs twice.