Question 1

Give the formula for calcium hydrogen sulfate.

Accepted Answer

A)  CaHSO4 
B)  Ca2(HSO4)2 
C)  Ca2HSO4 
D)  Ca(HSO4)2 
A)  CaHSO4 
B)  Ca2(HSO4)2 
C)  Ca2HSO4 
D)  Ca(HSO4)2 D

Question 2

How many moles of C4H10 contain 9.25 × 1024 molecules of C4H10?

Accepted Answer

A)  65.1 moles C4H10 
B)  28.6 moles C4H10 
C)  34.9 moles C4H10 
D)  46.2 moles C4H10 
E)  15.4 moles C4H10 
A)  65.1 moles C4H10 
B)  28.6 moles C4H10 
C)  34.9 moles C4H10 
D)  46.2 moles C4H10 
E)  15.4 moles C4H10 E

Question 3

Write the name for Sn(SO4)2.Remember that Sn forms several ions.

Accepted Answer

A)  tin (I) sulfite 
B)  tin (IV) sulfate 
C)  tin sulfide 
D)  tin (II) sulfite 
E)  tin (I) sulfate 
A)  tin (I) sulfite 
B)  tin (IV) sulfate 
C)  tin sulfide 
D)  tin (II) sulfite 
E)  tin (I) sulfate B

Question 4

Which of the following is a molecular compound?

Accepted Answer

A)  CuCl2 
B)  KI 
C)  NaNO3 
D)  CH2Cl2 
E)  RbBr 
A)  CuCl2 
B)  KI 
C)  NaNO3 
D)  CH2Cl2 
E)  RbBr

Question 5

Write the name for Ba3(PO4)2.

Accepted Answer

A)  barium (III) phosphite 
B)  barium (II) phosphite 
C)  barium phosphate 
D)  tri barium phosphorustetraoxide 
E)  barium phosphite 
A)  barium (III) phosphite 
B)  barium (II) phosphite 
C)  barium phosphate 
D)  tri barium phosphorustetraoxide 
E)  barium phosphite

Question 6

What is the mass of a single bromine molecule,Br2?

Accepted Answer

A)  1.327 × 10-22 g 
B)  2.654 × 10-22 g 
C)  79.90 g 
D)  159.8 g 
A)  1.327 × 10-22 g 
B)  2.654 × 10-22 g 
C)  79.90 g 
D)  159.8 g

Question 7

Which of the following reactions is associated with the lattice energy of CaS (ΔH°latt)?

Accepted Answer

A)  Ca(s) + S(s) → CaS(s) 
B)  CaS(s) → Ca(s) + S(s) 
C)  Ca2⁺(aq) + S2⁻(aq) → CaS(s) 
D)  Ca2⁺(g) + S2⁻(g) → CaS(s) 
E)  CaS(s) → Ca2⁺(aq) + S2⁻(aq) 
A)  Ca(s) + S(s) → CaS(s) 
B)  CaS(s) → Ca(s) + S(s) 
C)  Ca2⁺(aq) + S2⁻(aq) → CaS(s) 
D)  Ca2⁺(g) + S2⁻(g) → CaS(s) 
E)  CaS(s) → Ca2⁺(aq) + S2⁻(aq)

Question 8

Give the name for P Cl3.

Accepted Answer

A)  phosphorus tri chloride 
B)  potassium tri chloride 
C)  phosphorus (III) chloride 
D)  phosphorus (II) chloride 
E)  phosphorus chloride 
A)  phosphorus tri chloride 
B)  potassium tri chloride 
C)  phosphorus (III) chloride 
D)  phosphorus (II) chloride 
E)  phosphorus chloride

Question 9

What is the empirical formula for a species that is composed of sulfur and oxygen with 57.19% of the mass coming from sulfur?

Accepted Answer

A)  SO 
B)  S2O3 
C)  S3O2 
D)  SO2 
E)  S2O 
A)  SO 
B)  S2O3 
C)  S3O2 
D)  SO2 
E)  S2O

Question 10

How can one compound contain both ionic and covalent bonds?
 Give an example.

Accepted Answer

An ionic compound that contains a polyat

Question 11

What is the mass of 0.500 mol of trichlorofluoro methane,C Cl3F ?

Accepted Answer

A)  3.64 × 10-3 g 
B)  68.7 g 
C)  137 g 
D)  275 g 
A)  3.64 × 10-3 g 
B)  68.7 g 
C)  137 g 
D)  275 g

Question 12

What is the chemical formula for strontium hydride?

Accepted Answer

A)  SrH2 
B)  SrOH 
C)  SrOH2 
D)  Sr(OH)2 
A)  SrH2 
B)  SrOH 
C)  SrOH2 
D)  Sr(OH)2

Question 13

Determine the volume of hexane that contains 5.33 × 1022 molecules of hexane.The density of hexane is 0.6548 g/mL and its molar mass is 86.17 g/mol.

Accepted Answer

A)  8.59 mL 
B)  13.5 mL 
C)  7.40 mL 
D)  12.4 mL 
E)  11.6 mL 
A)  8.59 mL 
B)  13.5 mL 
C)  7.40 mL 
D)  12.4 mL 
E)  11.6 mL

Question 14

Define empirical formula.

Accepted Answer

An empirical formula

Question 15

Which of the following is an atomic element?

Accepted Answer

A)  bromine 
B)  hydrogen 
C)  nitrogen 
D)  oxygen 
E)  calcium 
A)  bromine 
B)  hydrogen 
C)  nitrogen 
D)  oxygen 
E)  calcium

Question 16

Place the following in order of increasing magnitude of lattice energy. MgO KI Ba O

Accepted Answer

A)  Ba O < MgO < KI 
B)  KI < Ba O < MgO 
C)  MgO < Ba O < KI 
D)  KI < MgO < Ba O 
E)  MgO < KI < Ba O 
A)  Ba O < MgO < KI 
B)  KI < Ba O < MgO 
C)  MgO < Ba O < KI 
D)  KI < MgO < Ba O 
E)  MgO < KI < Ba O

Question 17

A covalent bond is best described as

Accepted Answer

A)  the sharing of electrons between atoms. 
B)  the transfer of electrons. 
C)  a bond between a metal and a nonmetal. 
D)  a bond between a metal and a polyatomic ion. 
E)  a bond between two polyatomic ions. 
A)  the sharing of electrons between atoms. 
B)  the transfer of electrons. 
C)  a bond between a metal and a nonmetal. 
D)  a bond between a metal and a polyatomic ion. 
E)  a bond between two polyatomic ions.

Question 18

Choose the compound below that should have the lowest melting point according to the ionic bonding model.

Accepted Answer

A)  LiF 
B)  NaCl 
C)  CsI 
D)  K Cl 
E)  Rb I 
A)  LiF 
B)  NaCl 
C)  CsI 
D)  K Cl 
E)  Rb I

Question 19

Which of the following has the greatest mass?

Accepted Answer

A)  6.02 × 1023 molecules of O2 
B)  16.0 g of O2 
C)  0. 500 mol of O2 
D)  All of the above have the same mass. 
A)  6.02 × 1023 molecules of O2 
B)  16.0 g of O2 
C)  0. 500 mol of O2 
D)  All of the above have the same mass.

Question 20

Identify the compound with the highest magnitude of lattice energy.

Accepted Answer

A)  Mg Br2 
B)  Ba Br2 
C)  Sr Br2 
D)  Ca Br2 
A)  Mg Br2 
B)  Ba Br2 
C)  Sr Br2 
D)  Ca Br2

Exam 5: Molecules and Compounds

Give the formula for calcium hydrogen sulfate.

How many moles of C4H10 contain 9.25 × 1024 molecules of C4H10?

Write the name for Sn(SO4)2.Remember that Sn forms several ions.

Which of the following is a molecular compound?

Write the name for Ba3(PO4)2.

What is the mass of a single bromine molecule,Br2?

Which of the following reactions is associated with the lattice energy of CaS (ΔH°latt)?

Give the name for P Cl3.

What is the empirical formula for a species that is composed of sulfur and oxygen with 57.19% of the mass coming from sulfur?

How can one compound contain both ionic and covalent bonds? Give an example.

What is the mass of 0.500 mol of trichlorofluoro methane,C Cl3F ?

What is the chemical formula for strontium hydride?

Determine the volume of hexane that contains 5.33 × 1022 molecules of hexane.The density of hexane is 0.6548 g/mL and its molar mass is 86.17 g/mol.

Define empirical formula.

Which of the following is an atomic element?

Place the following in order of increasing magnitude of lattice energy. MgO KI Ba O

A covalent bond is best described as

Choose the compound below that should have the lowest melting point according to the ionic bonding model.

Which of the following has the greatest mass?

Identify the compound with the highest magnitude of lattice energy.

Essentials: Units, Measurements, and Problem Solving

Atoms

The Quantum Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I

Chemical Bonding Ii

Chemical Reactions and Chemical Quantities

Introduction to Solutions and Aqueous Reactions

Thermochemistry

Gases

Liquids, Solids, and Intermolecular Forces

Crystalline Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Transition Metals and Coordination Compounds

Filters

How many moles of C₄H₁₀ contain 9.25 × 10²⁴ molecules of C₄H₁₀?

Write the name for Sn(SO₄)₂.Remember that Sn forms several ions.

Write the name for Ba₃(PO₄)₂.

What is the mass of a single bromine molecule,Br₂?

Which of the following reactions is associated with the lattice energy of CaS (ΔH°_latt)?

Give the name for P Cl₃.

What is the mass of 0.500 mol of trichlorofluoro methane,C Cl₃F?

Determine the volume of hexane that contains 5.33 × 10²² molecules of hexane.The density of hexane is 0.6548 g/mL and its molar mass is 86.17 g/mol.