Question 1

At room temperature, H2 molecules have the same average kinetic energy as O2.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following correctly arranges the given compounds in order of increasing boiling point (lowest to highest)?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 3

Small compressibility is a characteristic of which state of matter?

Accepted Answer

A) solid 
B) liquid 
C) gaseous 
D) more than one response is correct 
A) solid 
B) liquid 
C) gaseous 
D) more than one response is correct

Question 4

What volume of ammonia gas, NH3, in liters is produced at STP by the complete reaction of 100 g of nitrogen, N2, with excess hydrogen?   N2 + 3H2 → 2NH3

Accepted Answer

A) 74.7 
B) 747 
C) 62.5 
D) 160 
A) 74.7 
B) 747 
C) 62.5 
D) 160

Question 5

A gas sample is collected in a balloon. What happens to the density of the gas sample as the sample is heated?

Accepted Answer

A) decreases 
B) increases 
C) does not change 
D) a variable change occurs 
A) decreases 
B) increases 
C) does not change 
D) a variable change occurs

Question 6

The vapor pressure of a liquid

Accepted Answer

A) decreases with increasing temperature. 
B) is independent of temperature. 
C) is equal to one atmosphere at the normal boiling point. 
D) cannot be measured. 
A) decreases with increasing temperature. 
B) is independent of temperature. 
C) is equal to one atmosphere at the normal boiling point. 
D) cannot be measured.

Question 7

When a liquid sample is taken from sea level to a higher elevation, what happens to the external (atmospheric)pressure on the liquid and the boiling point of the liquid?

Accepted Answer

A) both decrease 
B) both increase 
C) pressure goes down, but boiling point goes up 
D) pressure goes up, but boiling point goes down 
A) both decrease 
B) both increase 
C) pressure goes down, but boiling point goes up 
D) pressure goes up, but boiling point goes down

Question 8

The specific heat of ice is 0.48 cal\g ° C. How much heat will it take to raise the temperature of 10 g of ice from − 30 ° C to − 20 ° C?

Accepted Answer

A) 0.48 cal 
B) 4.8 cal 
C) 48 cal 
D) 10 cal 
A) 0.48 cal 
B) 4.8 cal 
C) 48 cal 
D) 10 cal

Question 9

​ Which of the following laws gives a mathematical expression that relates the rates of effusion or diffusion of two gases to the masses of the molecules of the two gases?

Accepted Answer

A) Boyle's law 
B) Graham's law 
C) Dalton's law 
D) Avogadro's law 
A) Boyle's law 
B) Graham's law 
C) Dalton's law 
D) Avogadro's law

Question 10

​ Identify the law that states that the equal volumes of gases measured at the same temperature and pressure contain equal numbers of molecules.

Accepted Answer

A) Boyle's law 
B) Charles' law 
C) Avogadro's law 
D) Dalton's law 
A) Boyle's law 
B) Charles' law 
C) Avogadro's law 
D) Dalton's law

Question 11

The direct change from the solid state to the vapor state is called _____ .

Accepted Answer

A) evaporation 
B) sublimation 
C) boiling 
D) fusion 
A) evaporation 
B) sublimation 
C) boiling 
D) fusion

Question 12

A 5.00 liter sample of gas measured at 27.0°C and 1.25 atm of pressure has a mass of 10.13 g. What is the molecular weight of the gas in u?

Accepted Answer

A) 39.9 
B) 0.898 
C) 2.57 
D) 2.50 × 10 − 2 
A) 39.9 
B) 0.898 
C) 2.57 
D) 2.50 × 10 − 2

Question 13

In which of the following processes does the energy of the water increase?

Accepted Answer

A) water freezes 
B) steam condenses to liquid 
C) water evaporates 
D) more than one response is correct 
A) water freezes 
B) steam condenses to liquid 
C) water evaporates 
D) more than one response is correct

Question 14

Charles's law can be stated mathematically as: P1V1 = P2V2

Accepted Answer

A) True 
 B)False

Question 15

The combination of Boyle's law and Charles's law is called the combined gas law.

Accepted Answer

A) True 
 B)False

Question 16

When steam condenses, it absorbs heat.

Accepted Answer

A) True 
 B)False

Question 17

Given the following: heat of fusion of ice = 80.0 cal\g; specific heat of ice = 0.480 cal\g; and specific heat of water = 1.00 cal\g. Calculate the amount of heat required to melt 30.0 g of ice at 0 ° C.

Accepted Answer

A) 14.4 cal 
B) 2.41 cal 
C) 80.0 cal 
D) 2.40 kcal 
A) 14.4 cal 
B) 2.41 cal 
C) 80.0 cal 
D) 2.40 kcal

Question 18

Which of the following pressure units is largest?

Accepted Answer

A) one torr 
B) one mm Hg 
C) one psi 
D) one atm 
A) one torr 
B) one mm Hg 
C) one psi 
D) one atm

Question 19

The heat of vaporization is twice as great as the heat of condensation.

Accepted Answer

A) True 
 B)False

Question 20

A pressure is recorded as 622 torr. What is this pressure in atm?

Accepted Answer

A) 1.22 
B) 0.818 
C) 5.17 
D) 0.0393 
A) 1.22 
B) 0.818 
C) 5.17 
D) 0.0393

Exam 6: The States of Matter

At room temperature, H2 molecules have the same average kinetic energy as O2.

Which of the following correctly arranges the given compounds in order of increasing boiling point (lowest to highest)?

Small compressibility is a characteristic of which state of matter?

What volume of ammonia gas, NH3, in liters is produced at STP by the complete reaction of 100 g of nitrogen, N2, with excess hydrogen? N2 + 3H2 → 2NH3

A gas sample is collected in a balloon. What happens to the density of the gas sample as the sample is heated?

The vapor pressure of a liquid

When a liquid sample is taken from sea level to a higher elevation, what happens to the external (atmospheric)pressure on the liquid and the boiling point of the liquid?

The specific heat of ice is 0.48 cal\g ° C. How much heat will it take to raise the temperature of 10 g of ice from − 30 ° C to − 20 ° C?

​ Which of the following laws gives a mathematical expression that relates the rates of effusion or diffusion of two gases to the masses of the molecules of the two gases?

​ Identify the law that states that the equal volumes of gases measured at the same temperature and pressure contain equal numbers of molecules.

The direct change from the solid state to the vapor state is called _____ .

A 5.00 liter sample of gas measured at 27.0°C and 1.25 atm of pressure has a mass of 10.13 g. What is the molecular weight of the gas in u?

In which of the following processes does the energy of the water increase?

Charles's law can be stated mathematically as: P1V1 = P2V2

The combination of Boyle's law and Charles's law is called the combined gas law.

When steam condenses, it absorbs heat.

Given the following: heat of fusion of ice = 80.0 cal\g; specific heat of ice = 0.480 cal\g; and specific heat of water = 1.00 cal\g. Calculate the amount of heat required to melt 30.0 g of ice at 0 ° C.

Which of the following pressure units is largest?

The heat of vaporization is twice as great as the heat of condensation.

A pressure is recorded as 622 torr. What is this pressure in atm?

Matter, Measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

Solutions and Colloids

Reaction Rates and Equilibrium

Acids, Bases, and Salts

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters

At room temperature, H₂ molecules have the same average kinetic energy as O₂.

What volume of ammonia gas, NH₃, in liters is produced at STP by the complete reaction of 100 g of nitrogen, N₂, with excess hydrogen? N₂ + 3H₂ → 2NH₃

Which of the following laws gives a mathematical expression that relates the rates of effusion or diffusion of two gases to the masses of the molecules of the two gases?

Identify the law that states that the equal volumes of gases measured at the same temperature and pressure contain equal numbers of molecules.

Charles's law can be stated mathematically as: P₁V₁ = P₂V₂