Question 1

Rank Ne, HBr, CH3OH and Ar in order of increasing strength of cohesive forces (least to greatest).

Accepted Answer

A) Ne 3OH 3OH 3OH 3OH 
E) Ar 3OH < HBr 
A) Ne 3OH 3OH 3OH 3OH 
E) Ar 3OH < HBr D

Question 2

What is the concentration in molarity of a solution made by dissolving 20.0 grams of KOH in 150. mL of H2O?

Accepted Answer

A) 0.133 M 
B) 0.421 M 
C) 2.37 M 
D) 4.35 M 
E) 7.5 M 
A) 0.133 M 
B) 0.421 M 
C) 2.37 M 
D) 4.35 M 
E) 7.5 M C

Question 3

Which of these substances makes up the largest fraction of water on the planet?

Accepted Answer

A) Rain clouds 
B) Oceans 
C) Ground water 
D) Lakes 
E) Ice caps 
A) Rain clouds 
B) Oceans 
C) Ground water 
D) Lakes 
E) Ice caps B

Question 4

Crystal structure is most important:

Accepted Answer

A) in gases. 
B) in liquids. 
C) in solids. 
D) in all three phases. 
E) when a phase change occurs. 
A) in gases. 
B) in liquids. 
C) in solids. 
D) in all three phases. 
E) when a phase change occurs.

Question 5

Which of these is a result of dumping human waste near or directly into ground or surface waters?

Accepted Answer

A) hard water 
B) soft water 
C) biological contaminants 
D) chemical contaminants 
E) both C and D 
A) hard water 
B) soft water 
C) biological contaminants 
D) chemical contaminants 
E) both C and D

Question 6

Rank Ne, HBr, CH3OH and Ar in order of increasing boiling point (lowest to highest).

Accepted Answer

A) Ne 3OH 3OH 3OH 3OH 
E) Ar 3OH < HBr 
A) Ne 3OH 3OH 3OH 3OH 
E) Ar 3OH < HBr

Question 7

What is the percent by mass of hydrogen gas dissolved in palladium metal if 0.89 g of hydrogen is 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 8

Which of these substances contains the strongest cohesive forces?

Accepted Answer

A) HBr 
B) CH3F 
C) CH3OH 
D) CH3OCH3 
E) SiH4 
A) HBr 
B) CH3F 
C) CH3OH 
D) CH3OCH3 
E) SiH4

Question 9

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

Accepted Answer

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

Question 10

The stronger the cohesive forces in a substance:

Accepted Answer

A) the higher the boiling point and the melting point. 
B) the lower the boiling point and higher the melting point. 
C) the lower the boiling point and the melting point. 
D) the higher the boiling point the lower the melting point. 
E) Boiling and melting point are independent of forces. 
A) the higher the boiling point and the melting point. 
B) the lower the boiling point and higher the melting point. 
C) the lower the boiling point and the melting point. 
D) the higher the boiling point the lower the melting point. 
E) Boiling and melting point are independent of forces.

Question 11

Which of these substances is polar?

Accepted Answer

A) F2 
B) N2 
C) Ne 
D) CH4 
E) NH3 
A) F2 
B) N2 
C) Ne 
D) CH4 
E) NH3

Question 12

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 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 13

Arrange CH4, Cl2, and CO2 in order of increasing strength of dispersion forces (least to the greatest).

Accepted Answer

A) CH422 
B) Cl22 4 
C) CH422 
D) Cl242 
E) CO2 24 
A) CH422 
B) Cl22 4 
C) CH422 
D) Cl242 
E) CO2 24

Question 14

How many grams of CaCl2 are in 35.00 mL of a 0.237 M solution of CaCl2? (molar mass CaCl2 = 111 g\mol)

Accepted Answer

A) 0.307 g 
B) 0.460 g 
C) 0.920 g 
D) 1.84 g 
E) 3.75 g 
A) 0.307 g 
B) 0.460 g 
C) 0.920 g 
D) 1.84 g 
E) 3.75 g

Question 15

Which of these elements are the primary components in "hard water"?
I. magnesium
II. iron
III. calcium
IV. sodium

Accepted Answer

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

Question 16

Which of these substances would have the strongest cohesive forces in combination with the greatest molecular mobility?

Accepted Answer

A) H2O(l) 
B) CH4(g) 
C) KCl(s) 
D) O2(g) 
E) Au(s) 
A) H2O(l) 
B) CH4(g) 
C) KCl(s) 
D) O2(g) 
E) Au(s)

Question 17

A part per million is roughly equivalent to:

Accepted Answer

A) g\mL 
B) mg\mL 
C) g\L 
D) mg\L 
E) none of the above 
A) g\mL 
B) mg\mL 
C) g\L 
D) mg\L 
E) none of the above

Question 18

1.00 ppm is equivalent to:

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 19

Rank NH3, SiH4, CH4 and in order of increasing boiling point (lowest to highest).

Accepted Answer

A) NH3 4 4 
B) NH3 4 4 
C) SiH4 3 4 
D) SiH4 4 3 
E) CH4 4 3 
A) NH3 4 4 
B) NH3 4 4 
C) SiH4 3 4 
D) SiH4 4 3 
E) CH4 4 3

Question 20

Hydrogen bonding occurs in which of the following?

Accepted Answer

A) Hydrogen molecules. 
B) All molecules that contain hydrogen. 
C) Molecules that contain hydrogen and either nitrogen, oxygen or fluorine. 
D) Molecules that contain hydrogen bonded to either nitrogen, oxygen or fluorine. 
E) More than one of the above is correct. 
A) Hydrogen molecules. 
B) All molecules that contain hydrogen. 
C) Molecules that contain hydrogen and either nitrogen, oxygen or fluorine. 
D) Molecules that contain hydrogen bonded to either nitrogen, oxygen or fluorine. 
E) More than one of the above is correct.

Rank Ne, HBr, CH₃OH and Ar in order of increasing strength of cohesive forces (least to greatest).

What is the concentration in molarity of a solution made by dissolving 20.0 grams of KOH in 150. mL of H₂O?

Which of these substances makes up the largest fraction of water on the planet?

Crystal structure is most important:

Which of these is a result of dumping human waste near or directly into ground or surface waters?

Rank Ne, HBr, CH₃OH and Ar in order of increasing boiling point (lowest to highest).

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

Which of these substances contains the strongest cohesive forces?

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

The stronger the cohesive forces in a substance:

Which of these substances is polar?

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 surface-area to volume ratio.

Arrange CH₄, Cl₂, and CO₂ in order of increasing strength of dispersion forces (least to the greatest).

How many grams of CaCl₂ are in 35.00 mL of a 0.237 M solution of CaCl₂? (molar mass CaCl₂ = 111 g\mol)

Which of these elements are the primary components in "hard water"? I. magnesium II. iron III. calcium IV. sodium

Which of these substances would have the strongest cohesive forces in combination with the greatest molecular mobility?

A part per million is roughly equivalent to:

1.00 ppm is equivalent to:

Rank NH₃, SiH₄, CH₄ and in order of increasing boiling point (lowest to highest).

Hydrogen bonding occurs in which of the following?

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

Filters

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

Rank Ne, HBr, CH3OH and Ar in order of increasing strength of cohesive forces (least to greatest).

What is the concentration in molarity of a solution made by dissolving 20.0 grams of KOH in 150. mL of H2O?

Which of these substances makes up the largest fraction of water on the planet?

Crystal structure is most important:

Which of these is a result of dumping human waste near or directly into ground or surface waters?

Rank Ne, HBr, CH3OH and Ar in order of increasing boiling point (lowest to highest).

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

Which of these substances contains the strongest cohesive forces?

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

The stronger the cohesive forces in a substance:

Which of these substances is polar?

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 surface-area to volume ratio.

Arrange CH4, Cl2, and CO2 in order of increasing strength of dispersion forces (least to the greatest).

How many grams of CaCl2 are in 35.00 mL of a 0.237 M solution of CaCl2? (molar mass CaCl2 = 111 g\mol)

Which of these elements are the primary components in "hard water"? I. magnesium II. iron III. calcium IV. sodium

Which of these substances would have the strongest cohesive forces in combination with the greatest molecular mobility?

A part per million is roughly equivalent to:

1.00 ppm is equivalent to:

Rank NH3, SiH4, CH4 and in order of increasing boiling point (lowest to highest).

Hydrogen bonding occurs in which of the following?

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

Filters

Rank Ne, HBr, CH₃OH and Ar in order of increasing strength of cohesive forces (least to greatest).

What is the concentration in molarity of a solution made by dissolving 20.0 grams of KOH in 150. mL of H₂O?

Rank Ne, HBr, CH₃OH and Ar in order of increasing boiling point (lowest to highest).

Arrange CH₄, Cl₂, and CO₂ in order of increasing strength of dispersion forces (least to the greatest).

How many grams of CaCl₂ are in 35.00 mL of a 0.237 M solution of CaCl₂? (molar mass CaCl₂ = 111 g\mol)

Rank NH₃, SiH₄, CH₄ and in order of increasing boiling point (lowest to highest).