Question 1

Which of the following compounds is nail polish remover?

Accepted Answer

A)  (CH3)2C=O 
B)  CH3CH2Cl 
C)  C2H6 
D)  CH3CO2H  
E)  CH3SCH3 
A)  (CH3)2C=O 
B)  CH3CH2Cl 
C)  C2H6 
D)  CH3CO2H  
E)  CH3SCH3

Question 2

Which of the following has the greatest mass?

Accepted Answer

A)  7.75 × 1022 molecules of O2 
B)  2.00 g of O2 
C)  0.0625 mol of O2 
D)  All of the above have the same mass. 
A)  7.75 × 1022 molecules of O2 
B)  2.00 g of O2 
C)  0.0625 mol of O2 
D)  All of the above have the same mass.

Question 3

Determine the name for aqueous HCl.

Accepted Answer

A)  chloric acid 
B)  chlorous acid 
C)  hydrochlorous acid 
D)  hydrogen chlorate 
E)  hydrochloric acid 
A)  chloric acid 
B)  chlorous acid 
C)  hydrochlorous acid 
D)  hydrogen chlorate 
E)  hydrochloric acid

Question 4

What is the mass of 9.86 × 1024 molecules of CO2? The molar mass of CO2 is 44.01 g/mol.

Accepted Answer

A)  205 g 
B)  294 g 
C)  720 g 
D)  341 g 
E)  685 g 
A)  205 g 
B)  294 g 
C)  720 g 
D)  341 g 
E)  685 g

Question 5

How many molecules of N2O4 are in 76.3 g N2O4? The molar mass of N2O4 is 92.02 g/mol.

Accepted Answer

A)  5.54 × 1025 N2O4 molecules 
B)  7.26 × 1023 N2O4 molecules 
C)  1.38 × 1024 N2O4 molecules 
D)  4.59 × 1025 N2O4 molecules 
E)  4.99 × 1023 N2O4 molecules 
A)  5.54 × 1025 N2O4 molecules 
B)  7.26 × 1023 N2O4 molecules 
C)  1.38 × 1024 N2O4 molecules 
D)  4.59 × 1025 N2O4 molecules 
E)  4.99 × 1023 N2O4 molecules

Question 6

How many moles of C5H8 contain 4.95 × 1024 hydrogen atoms?

Accepted Answer

A)  8.22 moles C5H8 
B)  6.58 moles C5H8 
C)  1.03 moles C5H8 
D)  9.73 moles C5H8 
E)  3.09 moles C5H8 
A)  8.22 moles C5H8 
B)  6.58 moles C5H8 
C)  1.03 moles C5H8 
D)  9.73 moles C5H8 
E)  3.09 moles C5H8

Question 7

Write the formula for magnesium nitride.

Accepted Answer

A)  Mg3N2 
B)  Mg(NO3)2 
C)  MgN 
D)  Mg2N3 
E)  Mg(NO2)2 
A)  Mg3N2 
B)  Mg(NO3)2 
C)  MgN 
D)  Mg2N3 
E)  Mg(NO2)2

Question 8

Which of the following is an atomic element?

Accepted Answer

A)  bromine 
B)  hydrogen 
C)  oxygen 
D)  fluorine 
E)  lithium 
A)  bromine 
B)  hydrogen 
C)  oxygen 
D)  fluorine 
E)  lithium

Question 9

Calculate the molar mass of Ca3(PO4)2.

Accepted Answer

A)  87.05 g/mol 
B)  215.21 g/mol 
C)  310.18 g/mol 
D)  279.21 g/mol 
E)  246.18 g/mol 
A)  87.05 g/mol 
B)  215.21 g/mol 
C)  310.18 g/mol 
D)  279.21 g/mol 
E)  246.18 g/mol

Question 10

Calculate the molar mass of H2CO3.

Accepted Answer

A)  62.03 g/mol 
B)  29.02 g/mol 
C)  61.02 g/mol 
D)  60.01 g/mol 
E)  74.04 g/mol 
A)  62.03 g/mol 
B)  29.02 g/mol 
C)  61.02 g/mol 
D)  60.01 g/mol 
E)  74.04 g/mol

Question 11

Identify the compound used in welding torches.

Accepted Answer

A)  methanol 
B)  propylamine 
C)  propanal 
D)  acetylene 
E)  acetone 
A)  methanol 
B)  propylamine 
C)  propanal 
D)  acetylene 
E)  acetone

Question 12

Which of the following compounds is vinegar?

Accepted Answer

A)  C4H6 
B)  CH3CH2Cl 
C)  CH3CO2H 
D)  CH3CO2CH3 
E)  CH3SCH3 
A)  C4H6 
B)  CH3CH2Cl 
C)  CH3CO2H 
D)  CH3CO2CH3 
E)  CH3SCH3

Question 13

Identify an ether.

Accepted Answer

A)  CH3CH2OCH2CH3 
B)  CH3CH2Br 
C)  CH3CH2PH2 
D)  CH3CH2CH2CH3 
E)  CH3COOH  
A)  CH3CH2OCH2CH3 
B)  CH3CH2Br 
C)  CH3CH2PH2 
D)  CH3CH2CH2CH3 
E)  CH3COOH

Question 14

Which one of the following is NOT an empirical formula?

Accepted Answer

A)  CHO 
B)  CH2O  
C)  C2H4O 
D)  C2H6O2 
E)  C3H8O 
A)  CHO 
B)  CH2O  
C)  C2H4O 
D)  C2H6O2 
E)  C3H8O

Question 15

Which of the following compounds is ethanol?

Accepted Answer

A)  C4H8 
B)  CH3CH2OH 
C)  CH3CO2CH3 
D)  CH3CH2F 
E)  CH3SCH3 
A)  C4H8 
B)  CH3CH2OH 
C)  CH3CO2CH3 
D)  CH3CH2F 
E)  CH3SCH3

Question 16

Give the name for KHSO3.

Accepted Answer

A)  monopotassium bisulfide 
B)  monopotassium bisulfate 
C)  potassium bisulfate 
D)  potassium bisulfite 
E)  potassium bisulfide 
A)  monopotassium bisulfide 
B)  monopotassium bisulfate 
C)  potassium bisulfate 
D)  potassium bisulfite 
E)  potassium bisulfide

Question 17

Give the formula for sulfurous acid.

Accepted Answer

A)  H2SO3 
B)  HSO3 
C)  H2SO4 
D)  HSO4 
A)  H2SO3 
B)  HSO3 
C)  H2SO4 
D)  HSO4

Question 18

Identify the element whose ion only exists as 2+.

Accepted Answer

A)  calcium 
B)  cesium 
C)  lead 
D)  carbon 
E)  radon 
A)  calcium 
B)  cesium 
C)  lead 
D)  carbon 
E)  radon

Question 19

How many moles of N2O4 are in 76.3 g N2O4? The molar mass of N2O4 is 92.02 g/mol.

Accepted Answer

A)  7.02 × 103 moles 
B)  1.42 × 10-4 moles 
C)  1.00 mole 
D)  1.21 moles 
E)  0.829 moles 
A)  7.02 × 103 moles 
B)  1.42 × 10-4 moles 
C)  1.00 mole 
D)  1.21 moles 
E)  0.829 moles

Question 20

6.00 moles of barium perchlorate contains the same number of ions as

Accepted Answer

A)  6.00 moles of lithium permanganate. 
B)  6.00 moles of sodium phosphate. 
C)  6.00 moles of barium bisulfite. 
D)  6.00 moles of lithium hydroxide. 
E)  6.00 moles of potassium nitrite. 
A)  6.00 moles of lithium permanganate. 
B)  6.00 moles of sodium phosphate. 
C)  6.00 moles of barium bisulfite. 
D)  6.00 moles of lithium hydroxide. 
E)  6.00 moles of potassium nitrite.

Exam 3: Molecules,compounds,and Chemical Equations

Which of the following compounds is nail polish remover?

Which of the following has the greatest mass?

Determine the name for aqueous HCl.

What is the mass of 9.86 × 1024 molecules of CO2? The molar mass of CO2 is 44.01 g/mol.

How many molecules of N2O4 are in 76.3 g N2O4? The molar mass of N2O4 is 92.02 g/mol.

How many moles of C5H8 contain 4.95 × 1024 hydrogen atoms?

Write the formula for magnesium nitride.

Which of the following is an atomic element?

Calculate the molar mass of Ca3(PO4)2.

Calculate the molar mass of H2CO3.

Identify the compound used in welding torches.

Which of the following compounds is vinegar?

Identify an ether.

Which one of the following is NOT an empirical formula?

Which of the following compounds is ethanol?

Give the name for KHSO3.

Give the formula for sulfurous acid.

Identify the element whose ion only exists as 2+.

How many moles of N2O4 are in 76.3 g N2O4? The molar mass of N2O4 is 92.02 g/mol.

6.00 moles of barium perchlorate contains the same number of ions as

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,

Liquids,solids,and Intermolecular Forces

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

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

What is the mass of 9.86 × 10²⁴ molecules of CO₂? The molar mass of CO₂ is 44.01 g/mol.

How many molecules of N₂O₄ are in 76.3 g N₂O₄? The molar mass of N₂O₄ is 92.02 g/mol.

How many moles of C₅H₈ contain 4.95 × 10²⁴ hydrogen atoms?

Calculate the molar mass of Ca₃(PO₄)₂.

Calculate the molar mass of H₂CO₃.

Give the name for KHSO₃.

How many moles of N₂O₄ are in 76.3 g N₂O₄? The molar mass of N₂O₄ is 92.02 g/mol.