Question 1

Water softeners are used to avoid the undesirable effects of hard water. These water softeners are charged with _____ ions.

Accepted Answer

A)  sodium 
B)  calcium 
C)  potassium 
D)  chlorine 
E)  magnesium 
A)  sodium 
B)  calcium 
C)  potassium 
D)  chlorine 
E)  magnesium

Question 2

Which of these substances would have the highest vapor pressure?

Accepted Answer

A)  CH3Cl 
B)  NH3 
C)  CH4 
D)  H2O 
E)  HBr 
A)  CH3Cl 
B)  NH3 
C)  CH4 
D)  H2O 
E)  HBr

Question 3

Which of these statements about cohesive forces is/ are correct?
I. In the absence of cohesive forces, most substances would be solids.
II. Cohesive forces result in the formation of liquid droplets or spheres.
III. A spherical shape minimizes the surface-area-to-volume ratio.

Accepted Answer

A)  I only 
B)  II only 
C)  I and III 
D)  II and III 
E)  I and II 
A)  I only 
B)  II only 
C)  I and III 
D)  II and III 
E)  I and II

Question 4

Which of these water treatment systems removes organic contaminants?

Accepted Answer

A)  Carbon filtering 
B)  Water softening 
C)  Reverse osmosis 
D)  Coagulation 
E)  Chlorination 
A)  Carbon filtering 
B)  Water softening 
C)  Reverse osmosis 
D)  Coagulation 
E)  Chlorination

Question 5

Which statement (s) about dispersion forces is /are incorrect ?

Accepted Answer

A)  Dispersion forces are sometimes called London forces. 
B)  Dispersion forces are the weakest of all cohesive forces. 
C)  Dispersion forces increase with an increase in molar mass. 
D)  Dispersion forces result in the establishment of a permanent dipole within a molecule. 
E)  Dispersion forces are the result of small fluctuations in the electron clouds of atoms and molecules. 
A)  Dispersion forces are sometimes called London forces. 
B)  Dispersion forces are the weakest of all cohesive forces. 
C)  Dispersion forces increase with an increase in molar mass. 
D)  Dispersion forces result in the establishment of a permanent dipole within a molecule. 
E)  Dispersion forces are the result of small fluctuations in the electron clouds of atoms and molecules.

Question 6

What is the percent by mass of hydrogen gas dissolved in palladium metal if 0.89 g of hydrogen is dissolved in 215   g of palladium metal?

Accepted Answer

A)  0.0041% 
B)  0.41% 
C)  2.4% 
D)  4.1% 
E)  41% 
A)  0.0041% 
B)  0.41% 
C)  2.4% 
D)  4.1% 
E)  41%

Question 7

Which of these is/are  not unique property/properties of water?
I. Water expands on freezing.
II. Water molecules are nonpolar.
III. Water is a good solvent.

Accepted Answer

A)  I only 
B)  I and III 
C)  II only 
D)  II and III 
E)  III only 
A)  I only 
B)  I and III 
C)  II only 
D)  II and III 
E)  III only

Question 8

Which substance is likely to have the lowest vapor pressure?

Accepted Answer

A)  CH3CH2CH2CH3 
B)  CH3CH2CH2CH2CH3 
C)  CH3CH2CH2CH2CH2CH3 
D)  CH3CH2CH2CH2CH2CH2CH3 
E)  The vapor pressure is about the same for all the listed molecules. 
A)  CH3CH2CH2CH3 
B)  CH3CH2CH2CH2CH3 
C)  CH3CH2CH2CH2CH2CH3 
D)  CH3CH2CH2CH2CH2CH2CH3 
E)  The vapor pressure is about the same for all the listed molecules.

Question 9

Drinking water contains 175 ppm of dissolved CaCO  3  per liter. How many grams of CaCO  3  are present in 2.00 L of water?

Accepted Answer

A)  0.0035 g 
B)  0.0175 g 
C)  0.035 g 
D)  0.175 g 
E)  0.350 g 
A)  0.0035 g 
B)  0.0175 g 
C)  0.035 g 
D)  0.175 g 
E)  0.350 g

Question 10

Which of the following is the equivalent of 1.00 ppm?

Accepted Answer

A)  1.00% 
B)  0.100% 
C)  0.0100% 
D)  0.000100% 
E)  0.0000010% 
A)  1.00% 
B)  0.100% 
C)  0.0100% 
D)  0.000100% 
E)  0.0000010%

Question 11

Which of these substances would you expect to have the lowest boiling point?

Accepted Answer

A)  Diamond 
B)  Graphite (pencil lead) 
C)  Water 
D)  Butane 
E)  Lead 
A)  Diamond 
B)  Graphite (pencil lead) 
C)  Water 
D)  Butane 
E)  Lead

Question 12

Which of these substances is nonpolar?

Accepted Answer

A)  H2O 
B)  SO2 
C)  HF 
D)  CCl4 
E)  CH3F 
A)  H2O 
B)  SO2 
C)  HF 
D)  CCl4 
E)  CH3F

Question 13

Which of these statements about liquids is /are  correct?
I. Increased molecular motion results in increased rate of evaporation.
II. Liquids take the shape of their container.
III. Liquids have relatively low compressibility compared to gases.

Accepted Answer

A)  I only 
B)  II only 
C)  I and II 
D)  II and III 
E)  I, II, and III 
A)  I only 
B)  II only 
C)  I and II 
D)  II and III 
E)  I, II, and III

Question 14

Which of these substances has/have the lowest boiling point?

Accepted Answer

A)  Br2 
B)  F2 
C)  I2 
D)  Cl2 
E)  Cl2 and I2 
A)  Br2 
B)  F2 
C)  I2 
D)  Cl2 
E)  Cl2 and I2

Question 15

What is the unit of molarity?

Accepted Answer

A)  Grams per mole 
B)  Grams per liter 
C)  Moles per liter 
D)  Molecules per liter 
E)  Molecules per mole 
A)  Grams per mole 
B)  Grams per liter 
C)  Moles per liter 
D)  Molecules per liter 
E)  Molecules per mole

Question 16

Which substance has the greatest dispersion force?

Accepted Answer

A)  CH4 
B)  F2 
C)  He 
D)  Cl2 
E)  O2 
A)  CH4 
B)  F2 
C)  He 
D)  Cl2 
E)  O2

Question 17

Which of these statements about water is correct?

Accepted Answer

A)  Water has a high boiling point. 
B)  Water expands when it freezes. 
C)  Water is the most abundant liquid on the planet. 
D)  Water molecules form  hydrogen bonds. 
E)  All of these are correct statements. 
A)  Water has a high boiling point. 
B)  Water expands when it freezes. 
C)  Water is the most abundant liquid on the planet. 
D)  Water molecules form  hydrogen bonds. 
E)  All of these are correct statements.

Question 18

Which of these is not a unit for measuring the concentration of solutions?

Accepted Answer

A)  M 
B)  m 
C)  ppm 
D)  atm 
E)  mg/L 
A)  M 
B)  m 
C)  ppm 
D)  atm 
E)  mg/L

Question 19

In which of the following does hydrogen bonding occur?

Accepted Answer

A)  Nonpolar molecules containing hydrogen 
B)  All molecules that contain hydrogen 
C)  Molecules that contain hydrogen and carbon 
D)  Molecules that contain hydrogen bonded to either nitrogen, oxygen, or fluorine 
E)  All of these 
A)  Nonpolar molecules containing hydrogen 
B)  All molecules that contain hydrogen 
C)  Molecules that contain hydrogen and carbon 
D)  Molecules that contain hydrogen bonded to either nitrogen, oxygen, or fluorine 
E)  All of these

Question 20

Which substance is likely to have the highest vapor pressure?

Accepted Answer

A)  CH3CH2CH2CH3 
B)  CH3CH2CH2CH2CH3 
C)  CH3CH2CH2CH2CH2CH3 
D)  CH3CH2CH2CH2CH2CH2CH3 
E)  The vapor pressure is about the same for all the listed molecules. 
A)  CH3CH2CH2CH3 
B)  CH3CH2CH2CH2CH3 
C)  CH3CH2CH2CH2CH2CH3 
D)  CH3CH2CH2CH2CH2CH2CH3 
E)  The vapor pressure is about the same for all the listed molecules.

Water softeners are used to avoid the undesirable effects of hard water. These water softeners are charged with _____ ions.

Which of these substances would have the highest vapor pressure?

Which of these statements about cohesive forces is/ are correct? I. In the absence of cohesive forces, most substances would be solids. II. Cohesive forces result in the formation of liquid droplets or spheres. III. A spherical shape minimizes the surface-area-to-volume ratio.

Which of these water treatment systems removes organic contaminants?

Which statement (s) about dispersion forces is /are incorrect ?

What is the percent by mass of hydrogen gas dissolved in palladium metal if 0.89 g of hydrogen is dissolved in 215 g of palladium metal?

Which of these is/are not unique property/properties of water? I. Water expands on freezing. II. Water molecules are nonpolar. III. Water is a good solvent.

Which substance is likely to have the lowest vapor pressure?

Drinking water contains 175 ppm of dissolved CaCO ₃ per liter. How many grams of CaCO ₃ are present in 2.00 L of water?

Which of the following is the equivalent of 1.00 ppm?

Which of these substances would you expect to have the lowest boiling point?

Which of these substances is nonpolar?

Which of these statements about liquids is /are correct? I. Increased molecular motion results in increased rate of evaporation. II. Liquids take the shape of their container. III. Liquids have relatively low compressibility compared to gases.

Which of these substances has/have the lowest boiling point?

What is the unit of molarity?

Which substance has the greatest dispersion force?

Which of these statements about water is correct?

Which of these is not a unit for measuring the concentration of solutions?

In which of the following does hydrogen bonding occur?

Which substance is likely to have the highest vapor pressure?

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Exam 12: The Liquids and Solids Around Us: Especially Water

Water softeners are used to avoid the undesirable effects of hard water. These water softeners are charged with _____ ions.

Which of these substances would have the highest vapor pressure?

Which of these statements about cohesive forces is/ are correct? I. In the absence of cohesive forces, most substances would be solids. II. Cohesive forces result in the formation of liquid droplets or spheres. III. A spherical shape minimizes the surface-area-to-volume ratio.

Which of these water treatment systems removes organic contaminants?

Which statement (s) about dispersion forces is /are incorrect ?

What is the percent by mass of hydrogen gas dissolved in palladium metal if 0.89 g of hydrogen is dissolved in 215 g of palladium metal?

Which of these is/are not unique property/properties of water? I. Water expands on freezing. II. Water molecules are nonpolar. III. Water is a good solvent.

Which substance is likely to have the lowest vapor pressure?

Drinking water contains 175 ppm of dissolved CaCO 3 per liter. How many grams of CaCO 3 are present in 2.00 L of water?

Which of the following is the equivalent of 1.00 ppm?

Which of these substances would you expect to have the lowest boiling point?

Which of these substances is nonpolar?

Which of these statements about liquids is /are correct? I. Increased molecular motion results in increased rate of evaporation. II. Liquids take the shape of their container. III. Liquids have relatively low compressibility compared to gases.

Which of these substances has/have the lowest boiling point?

What is the unit of molarity?

Which substance has the greatest dispersion force?

Which of these statements about water is correct?

Which of these is not a unit for measuring the concentration of solutions?

In which of the following does hydrogen bonding occur?

Which substance is likely to have the highest vapor pressure?

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

Light and Color

Nuclear Chemistry

Energy for Today

Energy for Tomorrow: Solar and Other Renewable Energy Sources

The Air Around Us

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology Online Only

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Drinking water contains 175 ppm of dissolved CaCO ₃ per liter. How many grams of CaCO ₃ are present in 2.00 L of water?