Question 1

Identify the compound with covalent bonds.

Accepted Answer

A) CH4 
B) Kr 
C) KBr 
D) Li 
E) NaCl 
A) CH4 
B) Kr 
C) KBr 
D) Li 
E) NaCl

Question 2

Determine the name for P4O10.

Accepted Answer

A) phosphorus (IV)oxide 
B) diphosphorus pentoxide 
C) phosphorus oxide 
D) phosphorus (II)oxide 
E) tetraphosphorus decoxide 
A) phosphorus (IV)oxide 
B) diphosphorus pentoxide 
C) phosphorus oxide 
D) phosphorus (II)oxide 
E) tetraphosphorus decoxide

Question 3

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

Accepted Answer

An ionic compound that contains a polyat

Question 4

Write a balanced equation to show the reaction of gaseous ethane with gaseous oxygen to form carbon monoxide gas and water vapor.

Accepted Answer

A) 2 C2H6(g)+ 7 O2(g)→ 4 CO2(g)+ 6 H2O(g) 
B) C2H6(g)+ 5 O(g)→ 2 CO(g)+ 3 H2O(g) 
C) 2 C2H6(g)+ 5 O2(g)→ 4 CO(g)+ 6 H2O(g) 
D) C2H6(g)+ 7 O(g)→ 2 CO2(g)+ 3 H2O(g) 
E) 2 CH3(g)+ 5 O(g)→ 2 CO(g)+ 3 H2O(g) 
A) 2 C2H6(g)+ 7 O2(g)→ 4 CO2(g)+ 6 H2O(g) 
B) C2H6(g)+ 5 O(g)→ 2 CO(g)+ 3 H2O(g) 
C) 2 C2H6(g)+ 5 O2(g)→ 4 CO(g)+ 6 H2O(g) 
D) C2H6(g)+ 7 O(g)→ 2 CO2(g)+ 3 H2O(g) 
E) 2 CH3(g)+ 5 O(g)→ 2 CO(g)+ 3 H2O(g)

Question 5

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 6

Write the formula for the compound formed between potassium and sulfur.

Accepted Answer

A) KS 
B) KS2 
C) K2S 
D) K2SO3 
E) K3S2 
A) KS 
B) KS2 
C) K2S 
D) K2SO3 
E) K3S2

Question 7

Combustion analysis of 1.200 g of an unknown compound containing carbon,hydrogen,and oxygen produced 2.086 g of CO2 and 1.134 g of H2O.What is the empirical formula of the compound?

Accepted Answer

A) C2H5O 
B) C2H5O2 
C) C2H10O3 
D) C3H8O2 
A) C2H5O 
B) C2H5O2 
C) C2H10O3 
D) C3H8O2

Question 8

What is the mass of a sample of water (H2O)containing 3.00 × 1022 H2O molecules?

Accepted Answer

A) 18.0 g 
B) 0.900 g 
C) 9.00 g 
D) 1.00 mol 
A) 18.0 g 
B) 0.900 g 
C) 9.00 g 
D) 1.00 mol

Question 9

Determine the name for CoCl2∙6H2O.Remember that Co forms several ions.

Accepted Answer

A) cobalt chloride hydrate 
B) cobalt (I)chloride heptahydrate 
C) cobalt (II)chloride heptahydrate 
D) cobalt (II)chloride hexahydrate 
E) cobalt (I)chloride 
A) cobalt chloride hydrate 
B) cobalt (I)chloride heptahydrate 
C) cobalt (II)chloride heptahydrate 
D) cobalt (II)chloride hexahydrate 
E) cobalt (I)chloride

Question 10

Which of the following is a molecular compound?

Accepted Answer

A) NaCN 
B) LiOH 
C) SrI2 
D) ZnS 
E) P4O10 
A) NaCN 
B) LiOH 
C) SrI2 
D) ZnS 
E) P4O10

Question 11

Determine the name for TiCO3.Remember that titanium forms several ions.

Accepted Answer

A) titanium (II)carbonate 
B) titanium carbide 
C) titanium carbonite 
D) titanium (II)carbonite 
E) titanium (I)carbonate 
A) titanium (II)carbonate 
B) titanium carbide 
C) titanium carbonite 
D) titanium (II)carbonite 
E) titanium (I)carbonate

Question 12

Which has the least number of atoms?

Accepted Answer

A) 1mol O2 
B) 1mol H2O 
C) 4.0 g He 
D) 1.2 g C 
A) 1mol O2 
B) 1mol H2O 
C) 4.0 g He 
D) 1.2 g C

Question 13

What is the empirical formula for C4H10O2?

Accepted Answer

A) C2H5O 
B) CHO 
C) C2H4O 
D) CHO2 
E) CH2O 
A) C2H5O 
B) CHO 
C) C2H4O 
D) CHO2 
E) CH2O

Question 14

Give the name for NaNO3.

Accepted Answer

A) sodium nitrite 
B) sodium nitrate 
C) sodium pernitrate 
D) sodium hyponitrite 
E) sodium hyponitrate 
A) sodium nitrite 
B) sodium nitrate 
C) sodium pernitrate 
D) sodium hyponitrite 
E) sodium hyponitrate

Question 15

How many moles of C3H8 contain 4.95 × 1024 hydrogen atoms?

Accepted Answer

A) 8.22 moles C3H8 
B) 6.58 moles C3H8 
C) 1.03 moles C3H8 
D) 9.73 moles C3H8 
E) 3.09 moles C3H8 
A) 8.22 moles C3H8 
B) 6.58 moles C3H8 
C) 1.03 moles C3H8 
D) 9.73 moles C3H8 
E) 3.09 moles C3H8

Question 16

Describe the difference between a molecular formula and an empirical formula.Give an example.

Accepted Answer

A molecular formula is the exact number

Question 17

An ionic bond is best described as

Accepted Answer

A) the sharing of electrons. 
B) the transfer of electrons from one atom to another. 
C) the attraction that holds the atoms together in a polyatomic ion. 
D) the attraction between 2 nonmetal atoms. 
E) the attraction between 2 metal atoms. 
A) the sharing of electrons. 
B) the transfer of electrons from one atom to another. 
C) the attraction that holds the atoms together in a polyatomic ion. 
D) the attraction between 2 nonmetal atoms. 
E) the attraction between 2 metal atoms.

Question 18

How many atoms of oxygen are in 5.00 g of ethanol,C2H6O?

Accepted Answer

A) 6.52 × 1022 
B) 6 
C) 5.52 × 1024 
D) 6.02 × 1023 
A) 6.52 × 1022 
B) 6 
C) 5.52 × 1024 
D) 6.02 × 1023

Question 19

What is the mass,in kg,of 6.89 × 1025 molecules of CO2? The molar mass of CO2 is 44.01 g/mol.

Accepted Answer

A) 3.85 kg 
B) 5.04 kg 
C) 2.60 kg 
D) 3.03 kg 
E) 6.39 kg 
A) 3.85 kg 
B) 5.04 kg 
C) 2.60 kg 
D) 3.03 kg 
E) 6.39 kg

Question 20

What does the illustration represent? (Ref: P3e p.78)

Accepted Answer

A) atomic element 
B) molecular element 
C) molecular compound 
D) ionic compound 
A) atomic element 
B) molecular element 
C) molecular compound 
D) ionic compound

Identify the compound with covalent bonds.

Determine the name for P₄O₁₀.

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

Write a balanced equation to show the reaction of gaseous ethane with gaseous oxygen to form carbon monoxide gas and water vapor.

Which of the following has the greatest mass?

Write the formula for the compound formed between potassium and sulfur.

Combustion analysis of 1.200 g of an unknown compound containing carbon,hydrogen,and oxygen produced 2.086 g of CO₂ and 1.134 g of H₂O.What is the empirical formula of the compound?

What is the mass of a sample of water (H₂O)containing 3.00 × 10²²H₂O molecules?

Determine the name for CoCl₂^∙6H₂O.Remember that Co forms several ions.

Which of the following is a molecular compound?

Determine the name for TiCO₃.Remember that titanium forms several ions.

Which has the least number of atoms?

What is the empirical formula for C₄H₁₀O₂?

Give the name for NaNO₃.

How many moles of C₃H₈ contain 4.95 × 10²⁴ hydrogen atoms?

Describe the difference between a molecular formula and an empirical formula.Give an example.

An ionic bond is best described as

How many atoms of oxygen are in 5.00 g of ethanol,C₂H₆O?

What is the mass,in kg,of 6.89 × 10²⁵molecules of CO₂? The molar mass of CO₂ is 44.01 g/mol.

What does the illustration represent? (Ref: P3e p.78)

Matter, Measurement, and Problem Solving

Atoms and Elements

Chemical Quantities and Aqueous Reactions

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

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

Exam 3: Molecules, Compounds and Chemical Equations

Identify the compound with covalent bonds.

Determine the name for P4O10.

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

Write a balanced equation to show the reaction of gaseous ethane with gaseous oxygen to form carbon monoxide gas and water vapor.

Which of the following has the greatest mass?

Write the formula for the compound formed between potassium and sulfur.

Combustion analysis of 1.200 g of an unknown compound containing carbon,hydrogen,and oxygen produced 2.086 g of CO2 and 1.134 g of H2O.What is the empirical formula of the compound?

What is the mass of a sample of water (H2O)containing 3.00 × 1022 H2O molecules?

Determine the name for CoCl2∙6H2O.Remember that Co forms several ions.

Which of the following is a molecular compound?

Determine the name for TiCO3.Remember that titanium forms several ions.

Which has the least number of atoms?

What is the empirical formula for C4H10O2?

Give the name for NaNO3.

How many moles of C3H8 contain 4.95 × 1024 hydrogen atoms?

Describe the difference between a molecular formula and an empirical formula.Give an example.

An ionic bond is best described as

How many atoms of oxygen are in 5.00 g of ethanol,C2H6O?

What is the mass,in kg,of 6.89 × 1025 molecules of CO2? The molar mass of CO2 is 44.01 g/mol.

What does the illustration represent? (Ref: P3e p.78)

Matter, Measurement, and Problem Solving

Atoms and Elements

Chemical Quantities and Aqueous Reactions

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

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

Determine the name for P₄O₁₀.

Combustion analysis of 1.200 g of an unknown compound containing carbon,hydrogen,and oxygen produced 2.086 g of CO₂ and 1.134 g of H₂O.What is the empirical formula of the compound?

What is the mass of a sample of water (H₂O)containing 3.00 × 10²²H₂O molecules?

Determine the name for CoCl₂^∙6H₂O.Remember that Co forms several ions.

Determine the name for TiCO₃.Remember that titanium forms several ions.

What is the empirical formula for C₄H₁₀O₂?

Give the name for NaNO₃.

How many moles of C₃H₈ contain 4.95 × 10²⁴ hydrogen atoms?

How many atoms of oxygen are in 5.00 g of ethanol,C₂H₆O?

What is the mass,in kg,of 6.89 × 10²⁵molecules of CO₂? The molar mass of CO₂ is 44.01 g/mol.