Question 1

The density of sulfur vapor at 1273 K and 740 mm Hg is 0.5977 g/L. Its molar mass is ________.

Accepted Answer

A)  32 
B)  64 
C)  96 
D)  128 
A)  32 
B)  64 
C)  96 
D)  128

Question 2

Calculate the volume occupied by 18.0 g of water vapor at 100 °C and 1.00 atm.

Accepted Answer

A)  11.2 L 
B)  22.4 L 
C)  30.6 L 
D)  61.2 L 
A)  11.2 L 
B)  22.4 L 
C)  30.6 L 
D)  61.2 L

Question 3

An unknown gaseous substance has a density of 1.06 g/L at 31 °C and 371 torr. Its molecular weight is ________.

Accepted Answer

A)  27 g/mol 
B)  54 g/mol 
C)  81 g/mol 
D)  108 g/mol 
A)  27 g/mol 
B)  54 g/mol 
C)  81 g/mol 
D)  108 g/mol

Question 4

Match each set of two variables of an ideal gas  with its corresponding relationship (proportional or inversely proportional).
-volume and number of moles

Accepted Answer

A) proportional 
B) inversely proportional 
A) proportional 
B) inversely proportional

Question 5

A gas occupies 340 mL at 273 K and 610 torr. What is the final temperature when the pressure is increased to 1 atm, and the volume being held constant? 1 atm = 760 torr.

Accepted Answer

A)  67 °C 
B)  267 °C 
C)  340 °C 
D)  613 °C 
A)  67 °C 
B)  267 °C 
C)  340 °C 
D)  613 °C

Question 6

124 cm Hg is equal to 1.63 atm.

Accepted Answer

A) True 
 B)False

Question 7

The ideal gas law may be applied also to a mixture of gases.

Accepted Answer

A) True 
 B)False

Question 8

Match the event to the corresponding consequence .
-At constant pressure and for the same gas, as the T decreases, ________.

Accepted Answer

A) the density increases 
B) the pressure increases 
C) the pressure decreases 
D) the density decreases 
A) the density increases 
B) the pressure increases 
C) the pressure decreases 
D) the density decreases

Question 9

Match the event to the corresponding consequence.
-At constant pressure, as volume increases, ________.

Accepted Answer

A) pressure decreases 
B) volume decreases 
C) volume increases 
D) temperature decreases 
E) pressure increases
F)temperature increases 
A) pressure decreases 
B) volume decreases 
C) volume increases 
D) temperature decreases 
E) pressure increases
F)temperature increases

Question 10

The density of hydrogen gas at STP is ________ the density of oxygen under identical conditions.

Accepted Answer

A)  four times larger than 
B)  eight times larger than 
C)  sixteen times smaller than 
D)  equal to, since both densities are taken under the same conditions 
A)  four times larger than 
B)  eight times larger than 
C)  sixteen times smaller than 
D)  equal to, since both densities are taken under the same conditions

Question 11

One of the assumptions taken when dealing with ideal gas law is that most volume occupied by a gas is actually empty space.

Accepted Answer

A) True 
 B)False

Question 12

Match the event to the corresponding consequence .
-At constant pressure and temperature, as the molecular mass of a gas decreases, ________.

Accepted Answer

A) the density increases 
B) the pressure increases 
C) the pressure decreases 
D) the density decreases 
A) the density increases 
B) the pressure increases 
C) the pressure decreases 
D) the density decreases

Question 13

Match the volumes with the other variables that best match
-23.6 L occupied by ________.

Accepted Answer

A) 40.0 g of fluorine gas at STP 
B) 40.0 g of fluorine gas at 900 torr and 298 K 
C) 48.0 g ozone at STP 
D) 3.9 g helium gas at -20 °C and 800 mm Hg 
E) 16.0 g oxygen gas at STP
F)0.30 moles of methane gas at STP 
A) 40.0 g of fluorine gas at STP 
B) 40.0 g of fluorine gas at 900 torr and 298 K 
C) 48.0 g ozone at STP 
D) 3.9 g helium gas at -20 °C and 800 mm Hg 
E) 16.0 g oxygen gas at STP
F)0.30 moles of methane gas at STP

Question 14

If the volume of a given gas sample doubles, what happens to the temperature of the gas? The amount of gas and the pressure of the gas stay the same.

Accepted Answer

A)  increase by a factor of 2 
B)  decrease by a factor of 2 
C)  stay exactly the same 
A)  increase by a factor of 2 
B)  decrease by a factor of 2 
C)  stay exactly the same

Question 15

Match the volumes with the other variables that best match
-22.4 L occupied by ________.

Accepted Answer

A) 40.0 g of fluorine gas at STP 
B) 40.0 g of fluorine gas at 900 torr and 298 K 
C) 48.0 g ozone at STP 
D) 3.9 g helium gas at -20 °C and 800 mm Hg 
E) 16.0 g oxygen gas at STP
F)0.30 moles of methane gas at STP 
A) 40.0 g of fluorine gas at STP 
B) 40.0 g of fluorine gas at 900 torr and 298 K 
C) 48.0 g ozone at STP 
D) 3.9 g helium gas at -20 °C and 800 mm Hg 
E) 16.0 g oxygen gas at STP
F)0.30 moles of methane gas at STP

Question 16

0.15 atm is equal to ________. 1 atm = 760 torr.

Accepted Answer

A)  11.4 torr 
B)  114 torr 
C)  1.14 × 10-5 torr 
D)  1.14 × 10-3 torr 
A)  11.4 torr 
B)  114 torr 
C)  1.14 × 10-5 torr 
D)  1.14 × 10-3 torr

Question 17

1.86 moles of a gas occupy 245 L at 281 °C under a pressure of 0.346 atm. When the pressure is increased to 0.886 atm while keeping the same temperature, the new volume will be ________.

Accepted Answer

A)  627 L 
B)  799 L 
C)  95.7 L 
D)  47.8 L 
A)  627 L 
B)  799 L 
C)  95.7 L 
D)  47.8 L

Question 18

A 4.23 L sample of a gas is originally at 747 mm Hg at 297 K. The volume occupied by the same quantity of gas under the same temperature and 700. torr is ________. 1 atm = 760 torr.

Accepted Answer

A)  3.96 L 
B)  4.51 L 
C)  1.88 L 
D)  1.68 L 
A)  3.96 L 
B)  4.51 L 
C)  1.88 L 
D)  1.68 L

Question 19

A gas occupies a volume of 480 mL at 127 °C and 140 mm Hg. What mathematical expression will yield the correct volume at 177 °C and 400 mm Hg?

Accepted Answer

A)  480 × (140/400) × (450/400) 
B)  480 × (400/140) × (450/400) 
C)  480 × (140/400) × (400/450) 
D)  480 × (400/140) × (400/450) 
A)  480 × (140/400) × (450/400) 
B)  480 × (400/140) × (450/400) 
C)  480 × (140/400) × (400/450) 
D)  480 × (400/140) × (400/450)

Question 20

Match each gas with its corresponding density, at STP.
-neon

Accepted Answer

A) 0.900 g/L 
B) 2.86 g/ L 
C) 1.43 g/L 
D) 3.93 g/L 
E) 1.34 g/L
F)0.760 g/ L 
A) 0.900 g/L 
B) 2.86 g/ L 
C) 1.43 g/L 
D) 3.93 g/L 
E) 1.34 g/L
F)0.760 g/ L

The density of sulfur vapor at 1273 K and 740 mm Hg is 0.5977 g/L. Its molar mass is ________.

Calculate the volume occupied by 18.0 g of water vapor at 100 °C and 1.00 atm.

An unknown gaseous substance has a density of 1.06 g/L at 31 °C and 371 torr. Its molecular weight is ________.

Match each set of two variables of an ideal gas with its corresponding relationship (proportional or inversely proportional). -volume and number of moles

A gas occupies 340 mL at 273 K and 610 torr. What is the final temperature when the pressure is increased to 1 atm, and the volume being held constant? 1 atm = 760 torr.

124 cm Hg is equal to 1.63 atm.

The ideal gas law may be applied also to a mixture of gases.

Match the event to the corresponding consequence . -At constant pressure and for the same gas, as the T decreases, ________.

Match the event to the corresponding consequence. -At constant pressure, as volume increases, ________.

The density of hydrogen gas at STP is ________ the density of oxygen under identical conditions.

One of the assumptions taken when dealing with ideal gas law is that most volume occupied by a gas is actually empty space.

Match the event to the corresponding consequence . -At constant pressure and temperature, as the molecular mass of a gas decreases, ________.

Match the volumes with the other variables that best match -23.6 L occupied by ________.

If the volume of a given gas sample doubles, what happens to the temperature of the gas? The amount of gas and the pressure of the gas stay the same.

Match the volumes with the other variables that best match -22.4 L occupied by ________.

0.15 atm is equal to ________. 1 atm = 760 torr.

1.86 moles of a gas occupy 245 L at 281 °C under a pressure of 0.346 atm. When the pressure is increased to 0.886 atm while keeping the same temperature, the new volume will be ________.

A 4.23 L sample of a gas is originally at 747 mm Hg at 297 K. The volume occupied by the same quantity of gas under the same temperature and 700. torr is ________. 1 atm = 760 torr.

A gas occupies a volume of 480 mL at 127 °C and 140 mm Hg. What mathematical expression will yield the correct volume at 177 °C and 400 mm Hg?

Match each gas with its corresponding density, at STP. -neon

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

Exam 11: What If There Were No Intermolecular Forces - the Ideal Gas

The density of sulfur vapor at 1273 K and 740 mm Hg is 0.5977 g/L. Its molar mass is ________.

Calculate the volume occupied by 18.0 g of water vapor at 100 °C and 1.00 atm.

An unknown gaseous substance has a density of 1.06 g/L at 31 °C and 371 torr. Its molecular weight is ________.

Match each set of two variables of an ideal gas with its corresponding relationship (proportional or inversely proportional). -volume and number of moles

A gas occupies 340 mL at 273 K and 610 torr. What is the final temperature when the pressure is increased to 1 atm, and the volume being held constant? 1 atm = 760 torr.

124 cm Hg is equal to 1.63 atm.

The ideal gas law may be applied also to a mixture of gases.

Match the event to the corresponding consequence . -At constant pressure and for the same gas, as the T decreases, ________.

Match the event to the corresponding consequence. -At constant pressure, as volume increases, ________.

The density of hydrogen gas at STP is ________ the density of oxygen under identical conditions.

One of the assumptions taken when dealing with ideal gas law is that most volume occupied by a gas is actually empty space.

Match the event to the corresponding consequence . -At constant pressure and temperature, as the molecular mass of a gas decreases, ________.

Match the volumes with the other variables that best match -23.6 L occupied by ________.

If the volume of a given gas sample doubles, what happens to the temperature of the gas? The amount of gas and the pressure of the gas stay the same.

Match the volumes with the other variables that best match -22.4 L occupied by ________.

0.15 atm is equal to ________. 1 atm = 760 torr.

1.86 moles of a gas occupy 245 L at 281 °C under a pressure of 0.346 atm. When the pressure is increased to 0.886 atm while keeping the same temperature, the new volume will be ________.

A 4.23 L sample of a gas is originally at 747 mm Hg at 297 K. The volume occupied by the same quantity of gas under the same temperature and 700. torr is ________. 1 atm = 760 torr.

A gas occupies a volume of 480 mL at 127 °C and 140 mm Hg. What mathematical expression will yield the correct volume at 177 °C and 400 mm Hg?

Match each gas with its corresponding density, at STP. -neon

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters