Question 1

Which of the following is the correct formula for manganese(III)sulfate?

Accepted Answer

A)  MnSO4 
B)  Mn2SO4 
C)  Mn3(SO4)2 
D)  Mn2(SO4)3 
E)  Mn(SO4)2 
A)  MnSO4 
B)  Mn2SO4 
C)  Mn3(SO4)2 
D)  Mn2(SO4)3 
E)  Mn(SO4)2

Question 2

Which of the following is the correct name for the compound SrCl2?

Accepted Answer

A)  Strontium dichloride 
B)  Strontium dichlorine 
C)  Strontium(III)dichloride 
D)  Strontium chloride 
E)  Iodine strontide 
A)  Strontium dichloride 
B)  Strontium dichlorine 
C)  Strontium(III)dichloride 
D)  Strontium chloride 
E)  Iodine strontide

Question 3

Which of the following sets of ions is present in sodium sulfate,Na2SO4?

Accepted Answer

A)  Na+,S2−,and O2− 
B)  Na+,S2+,and O2− 
C)  Na+ and SO42− 
D)  Na+,S2−,and O2+ 
E)  Na+ and SO4− 
A)  Na+,S2−,and O2− 
B)  Na+,S2+,and O2− 
C)  Na+ and SO42− 
D)  Na+,S2−,and O2+ 
E)  Na+ and SO4−

Question 4

You have 2.50 g of each of the following elements: Ca,Cu,Cs,C,and Cr.Which sample contains the largest number of atoms?

Accepted Answer

A)  Ca 
B)  Cu 
C)  Cs 
D)  C 
E)  Cr 
A)  Ca 
B)  Cu 
C)  Cs 
D)  C 
E)  Cr

Question 5

Which of the following atoms contains more protons than neutrons?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 6

The elements in groups 1A-8A are known as the _____.

Accepted Answer

A)  main group elements 
B)  transition metals 
C)  halogens 
D)  metalloids or semimetals 
E)  noble gases 
A)  main group elements 
B)  transition metals 
C)  halogens 
D)  metalloids or semimetals 
E)  noble gases

Question 7

A 0.0050 g sample of boron contains _____ boron atoms.

Accepted Answer

A)  4.6 × 10-4 
B)  7.7 × 10-28 
C)  2.8 × 1020 
D)  3.1 × 1021 
E)  3.3 × 1022 
A)  4.6 × 10-4 
B)  7.7 × 10-28 
C)  2.8 × 1020 
D)  3.1 × 1021 
E)  3.3 × 1022

Question 8

C2H2F4 is the formula for two possible molecules.C2H2F4 is an example of a(n)_____.

Accepted Answer

A)  structural formula 
B)  empirical formula 
C)  condensed formula 
D)  spatial formula 
E)  molecular formula 
A)  structural formula 
B)  empirical formula 
C)  condensed formula 
D)  spatial formula 
E)  molecular formula

Question 9

Which of the following statements is true concerning   and   ?

Accepted Answer

A)  They have the same number of neutrons. 
B)  They are isotopes. 
C)  They have the same relative atomic mass. 
D)  They have the same mass number. 
E)  They have different chemical properties. 
A)  They have the same number of neutrons. 
B)  They are isotopes. 
C)  They have the same relative atomic mass. 
D)  They have the same mass number. 
E)  They have different chemical properties.

Question 10

Rubidium has two naturally occurring isotopes.The atomic weight of Rb is 85.4678 u.If 72.15% of Rb is found as Rb-85 (84.9117 u),what is the mass of the other isotope?

Accepted Answer

A)  0.56 u 
B)  85.68 u 
C)  86.68 u 
D)  86.02 u 
E)  83.47 u 
A)  0.56 u 
B)  85.68 u 
C)  86.68 u 
D)  86.02 u 
E)  83.47 u

Question 11

Which of the following elements is present in fourth period of group 3?

Accepted Answer

A)  Flourine 
B)  Chlorine 
C)  Barium 
D)  Argon 
E)  Sodium 
A)  Flourine 
B)  Chlorine 
C)  Barium 
D)  Argon 
E)  Sodium

Question 12

How many bromide ions are present in 0.55 g of iron(III)bromide?

Accepted Answer

A)  1.1 × 1021 ions 
B)  3.4 × 1021 ions 
C)  3.3 × 1023 ions 
D)  9.9 × 1023 ions 
E)  2.9 × 1026 ions 
A)  1.1 × 1021 ions 
B)  3.4 × 1021 ions 
C)  3.3 × 1023 ions 
D)  9.9 × 1023 ions 
E)  2.9 × 1026 ions

Question 13

Which of the following sets of ions is present in calcium hydrogen phosphate,CaHPO4?

Accepted Answer

A)  Ca2+ and PO43- 
B)  Ca2+ and HPO42- 
C)  Ca+ and HPO4- 
D)  Ca3+ and HPO43- 
E)  Ca2+,H+,P3-,and O2- 
A)  Ca2+ and PO43- 
B)  Ca2+ and HPO42- 
C)  Ca+ and HPO4- 
D)  Ca3+ and HPO43- 
E)  Ca2+,H+,P3-,and O2-

Question 14

Which of the following is the correct formula for potassium dihydrogen phosphate?

Accepted Answer

A)  KH2PO4 
B)  K2HPO4 
C)  K2H2PO4 
D)  K3H2PO4 
E)  KH2P 
A)  KH2PO4 
B)  K2HPO4 
C)  K2H2PO4 
D)  K3H2PO4 
E)  KH2P

Question 15

The building blocks of atoms (neutrons,protons,and electrons)are called _____ particles.

Accepted Answer

The answer of The building blocks of atoms (neutrons,protons,and electrons)are...

Question 16

Calculate the mass percent of chlorine in magnesium chloride.

Accepted Answer

A)  25.53% 
B)  37.24% 
C)  40.67% 
D)  59.33% 
E)  74.47% 
A)  25.53% 
B)  37.24% 
C)  40.67% 
D)  59.33% 
E)  74.47%

Question 17

Calculate the mass of 0.50 mol of chromium(III)sulfide.

Accepted Answer

A)  2.5 × 10-3 g 
B)  5.9 × 10-3 g 
C)  42 g 
D)  1.0 × 102 g 
E)  110 g 
A)  2.5 × 10-3 g 
B)  5.9 × 10-3 g 
C)  42 g 
D)  1.0 × 102 g 
E)  110 g

Question 18

What is the molecular mass of cyclononane,C9H18?

Accepted Answer

A)  13.02 g/mol 
B)  1963.92 g/mol 
C)  109.11 g/mol 
D)  126.24 g/mol 
E)  30.15 g/mol 
A)  13.02 g/mol 
B)  1963.92 g/mol 
C)  109.11 g/mol 
D)  126.24 g/mol 
E)  30.15 g/mol

Question 19

Lithium has two naturally occurring isotopes,6Li and 7Li.The atomic weight of lithium is 6.941.Which of the following statements concerning the relative abundance of each isotope is correct?

Accepted Answer

A)  The abundance of 7Li is greater than 6Li. 
B)  The abundance of 7Li is less than 6Li. 
C)  The abundance of 6Li is equal to the abundance of 7Li. 
D)  Not enough data is provided to determine the correct answer. 
E)  Based on the atomic mass,only 7Li occurs naturally. 
A)  The abundance of 7Li is greater than 6Li. 
B)  The abundance of 7Li is less than 6Li. 
C)  The abundance of 6Li is equal to the abundance of 7Li. 
D)  Not enough data is provided to determine the correct answer. 
E)  Based on the atomic mass,only 7Li occurs naturally.

Question 20

Which of the following elements does 'X' represent in   ?

Accepted Answer

A)  Ni 
B)  Zn 
C)  Rn 
D)  Ce 
E)  Pd 
A)  Ni 
B)  Zn 
C)  Rn 
D)  Ce 
E)  Pd

Exam 3: Atoms, molecules, and Ions

Which of the following is the correct formula for manganese(III)sulfate?

Which of the following is the correct name for the compound SrCl2?

Which of the following sets of ions is present in sodium sulfate,Na2SO4?

You have 2.50 g of each of the following elements: Ca,Cu,Cs,C,and Cr.Which sample contains the largest number of atoms?

Which of the following atoms contains more protons than neutrons?

The elements in groups 1A-8A are known as the _____.

A 0.0050 g sample of boron contains _____ boron atoms.

C2H2F4 is the formula for two possible molecules.C2H2F4 is an example of a(n)_____.

Which of the following statements is true concerning and ?

Rubidium has two naturally occurring isotopes.The atomic weight of Rb is 85.4678 u.If 72.15% of Rb is found as Rb-85 (84.9117 u),what is the mass of the other isotope?

Which of the following elements is present in fourth period of group 3?

How many bromide ions are present in 0.55 g of iron(III)bromide?

Which of the following sets of ions is present in calcium hydrogen phosphate,CaHPO4?

Which of the following is the correct formula for potassium dihydrogen phosphate?

The building blocks of atoms (neutrons,protons,and electrons)are called _____ particles.

Calculate the mass percent of chlorine in magnesium chloride.

Calculate the mass of 0.50 mol of chromium(III)sulfide.

What is the molecular mass of cyclononane,C9H18?

Lithium has two naturally occurring isotopes,6Li and 7Li.The atomic weight of lithium is 6.941.Which of the following statements concerning the relative abundance of each isotope is correct?

Which of the following elements does 'X' represent in ?

Basic Concepts of Chemistry

Lets Review: The Tools of Quantitative Chemistry

Chemical Reactions

Stoichiometry: Quantitative Information About Chemical Reactions

Principles of Chemical Reactivity: Energy and Chemical Reactions

The Structure of Atoms

The Structure of Atoms and Periodic Trends

Bonding and Molecular Structure

Bonding and Molecular Structure Orbital Hybridization and Molecular Orbitals

Gases and Their Properties

Intermolecular Forces and Liquids

The Solid State

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Chemical Reactivity: Equilibria

Principles of Chemical Reactivity: the Chemistry of Acids and Bases

Principles of Chemical Reactivity: Other Aspects of Aqueous Equilibria

Principles of Chemical Reactivity: Entropy and Free Energy

Principles of Chemical Reactivity: Electron Transfer Reactions

Environmental Chemistry: Earths Environment, energy, and Sustainability

The Chemistry of the Main Group Elements

The Chemistry of the Transition Elements

Carbon: Not Just Another Element

Biochemistry

Nuclear Chemistry

Filters

Which of the following sets of ions is present in sodium sulfate,Na₂SO₄?

C₂H₂F₄ is the formula for two possible molecules.C₂H₂F₄ is an example of a(n)_____.

Which of the following sets of ions is present in calcium hydrogen phosphate,CaHPO₄?

What is the molecular mass of cyclononane,C₉H₁₈?

Lithium has two naturally occurring isotopes,⁶Li and ⁷Li.The atomic weight of lithium is 6.941.Which of the following statements concerning the relative abundance of each isotope is correct?