Question 1

What charge is likely possible on a monatomic silver cation?

Accepted Answer

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

Question 2

Which of the following elements belongs to the alkaline earth metals series?

Accepted Answer

A)  Barium 
B)  Potassium 
C)  phosphorus 
D)  Bromine 
E)  Argon 
A)  Barium 
B)  Potassium 
C)  phosphorus 
D)  Bromine 
E)  Argon

Question 3

Copper has an atomic weight of 63.55 u.If 69.17% of copper exists as 63Cu (62.93960 u),what is the identity and the atomic mass of the other isotope?

Accepted Answer

A)  Cu-64; 63.82 u 
B)  Cu-64; 64.16 u 
C)  Cu-65; 64.16 u 
D)  Cu-65; 64.92 u 
E)  Cu-66; 65.91 u 
A)  Cu-64; 63.82 u 
B)  Cu-64; 64.16 u 
C)  Cu-65; 64.16 u 
D)  Cu-65; 64.92 u 
E)  Cu-66; 65.91 u

Question 4

An element consists of three isotopes.The abundance of one isotope is 92.21% and its atomic mass is 27.97693 u.The abundance of the second isotope is 4.70% and its atomic mass is 28.97649 u.The atomic mass of the third isotope is 29.97376 u.What is the atomic weight of the element?

Accepted Answer

A)  28.09 u 
B)  28.98 u 
C)  28.96 u 
D)  29.87 u 
E)  29.07 u 
A)  28.09 u 
B)  28.98 u 
C)  28.96 u 
D)  29.87 u 
E)  29.07 u

Question 5

Which of the following is the correct molar mass of sodium sulfate?

Accepted Answer

A)  55.06 g/mol 
B)  119.1 g/mol 
C)  78.05 g/mol 
D)  142.0 g/mol 
E)  110.0 g/mol 
A)  55.06 g/mol 
B)  119.1 g/mol 
C)  78.05 g/mol 
D)  142.0 g/mol 
E)  110.0 g/mol

Question 6

For a nonmetal in Group 6A of the periodic table,the most common monatomic ion will have a charge of _____.

Accepted Answer

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

Question 7

The molar mass of platinum is 195.08 g/mol.What is the mass of 1.00 × 102 Pt atoms?

Accepted Answer

A)  8.51 × 10-25 g 
B)  3.24 × 10-24 g 
C)  1.67 × 10-22 g 
D)  3.24 × 10-22 g 
E)  3.24 × 10-20 g 
A)  8.51 × 10-25 g 
B)  3.24 × 10-24 g 
C)  1.67 × 10-22 g 
D)  3.24 × 10-22 g 
E)  3.24 × 10-20 g

Question 8

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

Accepted Answer

A)  Sb 
B)  Ga 
C)  In 
D)  Si 
E)  Tl 
A)  Sb 
B)  Ga 
C)  In 
D)  Si 
E)  Tl

Question 9

What is the formula for the compound that is formed of ammonium and bromide ions?

Accepted Answer

A)  NH3Br 
B)  NH4Br 
C)  NH3Br2 
D)  NH4Br2 
E)  (NH4)2Br 
A)  NH3Br 
B)  NH4Br 
C)  NH3Br2 
D)  NH4Br2 
E)  (NH4)2Br

Question 10

William Crookes was the first to observe particles produced from a cathode ray tube.These particles are known as ________.

Accepted Answer

The answer of William Crookes was the first to observe...

Question 11

Calculate the number of moles in 0.48 g of Cu.

Accepted Answer

A)  0.033 mol 
B)  0.48 mol 
C)  31 mol 
D)  7.6 × 10−3 mol 
E)  1.3 × 102 mol 
A)  0.033 mol 
B)  0.48 mol 
C)  31 mol 
D)  7.6 × 10−3 mol 
E)  1.3 × 102 mol

Question 12

Determine the empirical formula of an oxide of nitrogen that contains 46.67 % nitrogen by mass.

Accepted Answer

A)  N2O5 
B)  N 
C)  N2O 
D)  N22 
E)  NO 
A)  N2O5 
B)  N 
C)  N2O 
D)  N22 
E)  NO

Question 13

Which of the following atoms contains the largest number of neutrons?

Accepted Answer

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

Question 14

A certain element consists of two stable isotopes.The first has a mass of 14.0031 amu and a percent natural abundance of 99.63%.The second has a mass of 15.001 amu and a percent natural abundance of 0.37%.What is the atomic weight of the element?

Accepted Answer

A)  13.95 amu 
B)  14.00 amu 
C)  14.01 amu 
D)  14.50 amu 
E)  19.50 amu 
A)  13.95 amu 
B)  14.00 amu 
C)  14.01 amu 
D)  14.50 amu 
E)  19.50 amu

Question 15

Electrons surround the nucleus and account for the majority of an atom's volume.

Accepted Answer

A)  1 only 
B)  2 only 
C)  3 only 
D)  2 and 3 
E)  1,2,and 3 
A)  1 only 
B)  2 only 
C)  3 only 
D)  2 and 3 
E)  1,2,and 3

Question 16

How many hydrogen atoms are present in 1.0 g of NH3?

Accepted Answer

A)  0.059 atoms 
B)  0.18 atoms 
C)  3.5 × 1022 atoms 
D)  1.1 × 1023 atoms 
E)  1.2 × 1022 atoms 
A)  0.059 atoms 
B)  0.18 atoms 
C)  3.5 × 1022 atoms 
D)  1.1 × 1023 atoms 
E)  1.2 × 1022 atoms

Question 17

Which of the following ionic compounds has the highest melting point?

Accepted Answer

A)  KBr 
B)  MgO 
C)  RbI 
D)  CaBr2 
E)  CsCl 
A)  KBr 
B)  MgO 
C)  RbI 
D)  CaBr2 
E)  CsCl

Question 18

Which of the following elements is present in the third period of group 7A?

Accepted Answer

A)  S 
B)  Cl2 
C)  I2 
D)  H2 
E)  Ar 
A)  S 
B)  Cl2 
C)  I2 
D)  H2 
E)  Ar

Question 19

Naturally occurring element X exists in three isotopic forms: X-28 (27.979 u,90.64% abundance),X-29 (28.976 u,4.00% abundance),and X-30 (29.974 u,5.36% abundance).Calculate the atomic weight of X.

Accepted Answer

A)  29.64 u 
B)  28.13 u 
C)  28.99 u 
D)  29.83 u 
E)  27.15 u 
A)  29.64 u 
B)  28.13 u 
C)  28.99 u 
D)  29.83 u 
E)  27.15 u

Question 20

What is the mass of chlorine-35 relative to carbon-12?

Accepted Answer

A)  0.657 
B)  0.522 
C)  1.52 
D)  2.92 
E)  23 
A)  0.657 
B)  0.522 
C)  1.52 
D)  2.92 
E)  23

Exam 3: Atoms, molecules, and Ions

What charge is likely possible on a monatomic silver cation?

Which of the following elements belongs to the alkaline earth metals series?

Copper has an atomic weight of 63.55 u.If 69.17% of copper exists as 63Cu (62.93960 u),what is the identity and the atomic mass of the other isotope?

An element consists of three isotopes.The abundance of one isotope is 92.21% and its atomic mass is 27.97693 u.The abundance of the second isotope is 4.70% and its atomic mass is 28.97649 u.The atomic mass of the third isotope is 29.97376 u.What is the atomic weight of the element?

Which of the following is the correct molar mass of sodium sulfate?

For a nonmetal in Group 6A of the periodic table,the most common monatomic ion will have a charge of _____.

The molar mass of platinum is 195.08 g/mol.What is the mass of 1.00 × 102 Pt atoms?

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

What is the formula for the compound that is formed of ammonium and bromide ions?

William Crookes was the first to observe particles produced from a cathode ray tube.These particles are known as ________.

Calculate the number of moles in 0.48 g of Cu.

Determine the empirical formula of an oxide of nitrogen that contains 46.67 % nitrogen by mass.

Which of the following atoms contains the largest number of neutrons?

A certain element consists of two stable isotopes.The first has a mass of 14.0031 amu and a percent natural abundance of 99.63%.The second has a mass of 15.001 amu and a percent natural abundance of 0.37%.What is the atomic weight of the element?

Electrons surround the nucleus and account for the majority of an atom's volume.

How many hydrogen atoms are present in 1.0 g of NH3?

Which of the following ionic compounds has the highest melting point?

Which of the following elements is present in the third period of group 7A?

Naturally occurring element X exists in three isotopic forms: X-28 (27.979 u,90.64% abundance),X-29 (28.976 u,4.00% abundance),and X-30 (29.974 u,5.36% abundance).Calculate the atomic weight of X.

What is the mass of chlorine-35 relative to carbon-12?

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

Copper has an atomic weight of 63.55 u.If 69.17% of copper exists as ⁶³Cu (62.93960 u),what is the identity and the atomic mass of the other isotope?

The molar mass of platinum is 195.08 g/mol.What is the mass of 1.00 × 10² Pt atoms?

How many hydrogen atoms are present in 1.0 g of NH₃?