Deck 6: The Gaseous State

Question 1

What is the pressure in millimeters of mercury that is equivalent tO₅ 00 psi?
(1 atm = 760 mm Hg and 1 atm = 14.7 psi)

A) 0.103 mm Hg
B) 9.67 mm Hg
C) 22.3 mm Hg
D) 2.59×10⁴ mm Hg
E) 5.59×10⁶ mm Hg

Answer 1

2.59×10⁴ mm Hg

Question 2

The pressure for inflating a certain automobile tire is 30.0 pounds per square inch (psi). What is this pressure reported in mm of Hg?
(1 atm = 14.7 psi; 760 mm Hg = 1 atm)

A) 2.98×10 ^{- 6} mm Hg
B) 2.69×10 ^{- 3} mm Hg
C) 0.580 mm Hg
D) 1.55×10³ mm Hg
E) 3.35×10⁵ mm Hg

Answer 2

1.55×10³ mm Hg

Question 3

A certain automobile tire is inflated to 36.0 pounds per square inch (psi). What pressure is this tire reported in mm of Hg?
(1 atm = 14.7 psi and 1 atm = 760 mm Hg)

A) 0.696 mm of Hg
B) 1.44 mm of Hg
C) 2.45 mm of Hg
D) 1.86×10³ mm of Hg
E) 4.02×10⁵ of Hg

Answer 3

1.86×10³ mm of Hg

Question 4

Express a pressure of 724 torr in atm.

A) 0.724 atm
B) 0.853 atm
C) 0.953 atm
D) 1.05 atm
E) none of these

Question 5

Which of the following three states of matter have(has) forces of repulsion that are far greater than their forces of attraction?
I. Solids
II. Liquids
III. Gases

A) III only
B) I and II
C) I and III
D) II and III
E) All of these

Question 6

At the peak of Mt. Everest, atmospheric pressure is 220. mm Hg. What is this pressure in pounds per square inch (psi)?
(1 atm = 760 mm Hg and 1 atm = 14.7 psi)

A) 1.97×10 ^{- 2} psi
B) 0.235 psi
C) 4.26 psi
D) 50.8 psi
E) 2.46×10⁶ psi

Question 7

Express a pressure of 0.567 atm in torr.

A) 431 torr
B) 245 torr
C) 563 torr
D) 684 torr
E) none of these

Question 8

Which of the following three states of matter have(has) a definite shape ?
I. Solids
II. Liquids
III. Gases

A) I only
B) I and II
C) I and III
D) II and III
E) All of these

Question 9

What are the molar volume, temperature and pressure respectively for an ideal gas at "Standard Temperature and Pressure", STP?

A) 1.0 L, 0 ° C, and 1 atm
B) 1.0 L, 25 ° C and 1 atm
C) 22.4 L, 0 ° C and 1 atm
D) 22.4 L, 25 ° C and 1 atm
E) 22.4 L, 25 ° C and 760 atm

Question 10

Express a pressure of 1.22 atm in kPa. (1 atm = 1.01×10⁵ Pa)

A) 1.44×10³ kPa
B) 124 kPa
C) 24.2 kPa
D) 213 kPa
E) none of these

Question 11

Given the three statements below, pick the correct answer.
I. Pressure is directly proportional to temperature in kelvins.
II. Volume is directly proportional to pressure.
III. Volume is directly proportional to the number of moles of the gas sample.

A) I and II are true, III is false
B) I and III are true, II is false
C) II and III are true, I is false
D) all three are true
E) only III is true

Question 12

A gas can be characterized by its volume . Which of the following parameters listed below are indirectly related to the volume of an ideal gas?
I. Pressure (if the mole amount and temperature are held constant).
II. Mole amount of gas (if the pressure and temperature are held constant).
III. Temperature (if the pressure and the mole amount are held constant).

A) I only
B) II only
C) III only
D) II and III
E) All of these

Question 13

The pressure of an ideal gas is directly proportional to which of the following three parameters?
I. Volume of an ideal gas at constant mole amount and temperature
II. Mole amount of an ideal gas at constant volume and temperature
III. Temperature of an ideal gas at constant volume and mole amount

A) II only
B) I and II
C) I and III
D) II and III
E) All of these

Question 14

A sample of a gas at 2.31 atm of pressure occupies 4.10 L. What will the volume be if the pressure is changed to 1.02 atm at constant temperature?

A) 4.65 L
B) 1.81 L
C) 18.6 L
D) 7.11 L
E) 9.28 L

Question 15

Atmospheric pressure on a particular day supports 29.9 inches of Hg. What is this pressure in atm's?
(1 inch Hg = 2.54 cm Hg; 1 atm = 760 mm Hg)

A) 0.0393 atm
B) 0.999 atm
C) 440 atm
D) 760 atm
E) None of these

Question 16

Which of the following units of pressure is equivalent to a "torr"?

A) atm
B) mm of Hg
C) bar
D) psi
E) pascal

Question 17

A basketball is inflated to 23.0 psi. How many millimeters of mercury can be supported by this pressure?
(1 atm = 14.7 psi and 1 atm = 760 mm of Hg)

A) 2.06×10 ^{- 3} mm of Hg
B) 4.45×10 ^{- 1} mm of Hg
C) 1.56 mm of Hg
D) 1.19×10³ mm of Hg
E) 2.57×10⁵ mm of Hg

Question 18

Which property(ies) listed below is(are) consistent with the gaseous state of matter ?
I. Gases have a lower density than liquids or solids and their densities change to a large extent as the temperature changes.
II. Gases are easily compressed to smaller volumes.
III. In general, most gases do not expand upon heating.

A) III only
B) I and II
C) I and III
D) II and III
E) All of these.

Question 19

A gas is initially contained in a moveable cylinder that occupies a volume of 900. mL under a pressure of 3.00 atm. What would be the volume of this same gas if the pressure is reduced to 0.500 atm at constant temperature?

A) 1.86×10 ^{- 4} mL
B) 150 mL
C) 600 mL
D) 1.35×10³ mL
E) 5.40×10³ mL

Question 20

A "Condensed phase" refers to what?

A) gases only
B) gases and liquids
C) liquids only
D) liquids and solids
E) solids only

Question 21

A 5.0 mol sample of gas exerts a pressure of 2.0 atm at 27 ° C in a certain container. What would be the pressure inside this container if 2.5 mol of the same gas are present at a temperature of 100 ° C?

A) 0.80 atm
B) 1.6 atm
C) 1.2 atm
D) 3.7 atm
E) none of these

Question 22

A sample of N₂ gas occupies a volume of 375 mL at 25 ° C and a pressure of 2.0 atm. What is the temperature in degrees Celsius of this sample of N₂ gas when it occupies a volume of 525 mL at the same pressure?

A) 35 ° C
B) 144 ° C
C) 194 ° C
D) 417 ° C
E) 690 ° C

Question 23

What is the final pressure of a gas if a given sample at 300 ° C, 2.2 atm and 2.4 L is changed to 0 ° C and 1.0 L?

A) 6.4 atm
B) 9.1 atm
C) 2.5 atm
D) 5.3 atm
E) none of these

Question 24

At constant temperature, a sample of 6.0 L of O₂ at 3.0 atm pressure is compressed until the volume decreases to 2.5 L. What is the new pressure in atmospheres?

A) 0.14 atm
B) 1.3 atm
C) 5.0 atm
D) 7.2 atm
E) 45 atm

Question 25

What pressure will a given sample of gas be at 27 ° C if at 100 ° C this gas exerts a pressure oF₄.0 atm, all measurements at constant volume?

A) 5.0 atm
B) 3.2 atm
C) 1.1 atm
D) 15 atm
E) none of these

Question 26

A sample of gas at 1.3 atm of pressure is in a 2.0 L container. What will the pressure be if the sample is transferred to a 0.90 L container?

A) 0.59 atm
B) 1.4 atm
C) 2.9 atm
D) 3.2 atm
E) none of these

Question 27

A balloon is inflated to a volume of 5.0 L at 25 ° C and 1.00 atm. At what temperature will the volume of the balloon reacH₆.0 L if the pressure is not changed?

A) - 25 ° C
B) 21 ° C
C) 30 ° C
D) 85 ° C
E) none of these

Question 28

A sample of SF₆ gas occupies a volume of 5.01 L at 198 ° C. Assuming the pressure is constant, what temperature in ° C is needed to reduce the volume to 2.24 L?

A) - 62.6 ° C
B) 88.5 ° C
C) 211 ° C
D) 443 ° C
E) 780 ° C

Question 29

A sample of gaseous anesthetic cyclopropane, with a volume oF₄25 mL at a temperature of 27 ° C is compressed tO₄15 mL at constant pressure by cooling the gas. What is the new temperature in degrees Celsius at this volume?

A) 10 ° C
B) 20 ° C
C) 28 ° C
D) 34 ° C
E) 293 ° C

Question 30

A sample of Argon gas occupies a volume of 1.20 L at 125 ° C and 1 atm. What would be the temperature in degrees Celsius for this same gas, if its volume is increased tO₅ .00 L at the same pressure?

A) - 177 ° C
B) 521 ° C
C) 1.39×10³ ° C
D) 1.66×10³ ° C
E) 1.93×10³ ° C

Question 31

If the volume of an ideal gas is 2.0 L at 0.50 atm of pressure, what is the final pressure if the volume increases tO₅ .0 L?

A) 0.20 atm
B) 1.3 atm
C) 1.0 atm
D) 0.50 atm
E) none of these

Question 32

What volume will a sample of gas occupy at 400 ° C if at 100 ° C it occupies 420 mL (pressure is constant)?

A) 233 mL
B) 1.26×10² mL
C) 582 mL
D) 758 mL
E) none of these

Question 33

If an ideal gas occupies 2.0 L at a temperature of 27 ° C, what is the volume at 100 ° C assuming constant pressure?

A) 0.40 L
B) 5.0 L
C) 2.5 L
D) 1.2 L
E) none of these

Question 34

What pressure would a gas exert if a sample at 2.4 atm in a 2.0 L container is transferred to a 5.0 L container?

A) 0.96 atm
B) 2.4 atm
C) 6.0 atm
D) 1.8 atm
E) none of these

Question 35

A 550. mL sample of gas at 2.00 torr of pressure is compressed to a volume oF₄.00 mL. What is the pressure on the compressed sample?

A) 2.09×10⁵ atm
B) 2.75 atm
C) 0.362 atm
D) 4.78×10 ^{- 5} atm
E) none of these

Question 36

A sample of gas is at 10 ° C and a pressure of 200 torr in a 2.40 L container. What is the pressure if the sample is moved to a 4.30 L container which is at 27 ° C?

A) 118 torr
B) 189 torr
C) 105 torr
D) 390 torr
E) none of these

Question 37

A sample of gas at 27 ° C, 4.8 atm in a 2.0 L container is moved to a 1.0 L container at 0 ° C. What is the pressure?

A) 0.36 atm
B) 2.6 atm
C) 10.4 atm
D) 8.7 atm
E) none of these

Question 38

A fixed quantity of gas at 23.0 ° C exhibits a pressure of 748 torr and occupies a volume of 10.3 L. What volume will this gas occupy at 165 ° C and constant pressure?

A) 1.44 L
B) 6.96 L
C) 15.2 L
D) 72.7 L
E) 73.9 L

Question 39

A gas occupies 3.8 L at 0.70 atm pressure. If this gas is allowed to expand tO₆.5 L at constant temperature, what is the final pressure?

A) 5.8×10 ^{- 2} atm
B) 0.41 atm
C) 1.2 atm
D) 17 atm
E) 35 atm

Question 40

A sample of NH₃ gas that occupies a volume of 23.0 L at 10.0 ° C is heated at constant pressure until it fills a container with a volume of 50.0 L. What is the final temperature in ° C for this gas?

A) - 143 ° C
B) 21.7 ° C
C) 130 ° C
D) 342 ° C
E) 615 ° C

Question 41

How would the Ideal Gas Law be rearranged to solve for the moles of gas ?

A) n = P×V×R×T
B)
C)
D)
E)

Question 42

Carbon monoxide is a poisonous gas that is formed as a by-product of incomplete combustion. What pressure does 1.52 moles of this gas exert upon its surroundings if it is contained in a 42.5 L vessel at 65 ° C?

A) 0.191 atm
B) 0.430 atm
C) 0.992 atm
D) 2.33 atm
E) 1.79×10³ atm

Question 43

Starting from the Combined Gas Law Equation given below, how is this equation rearranged to solve for T₂ ?
Combined Gas Law Equation

A)
B)
C)
D)
E)

Question 44

What are the units of the gas constant "R" when the pressure is given in atmospheres, the volume is given in liters, the amount of the gas is given in moles and the temperature is given in Kelvin?

A)
B)
C)
D)
E)

Question 45

What is the volume in milliliters of 5.00 moles of helium gas held at a pressure of 1.50 atm and 27 ° C?

A) 7.40 mL
B) 12.0 ml
C) 7.39×10³ mL
D) 8.21×10⁴ mL
E) 1.85×10⁵ mL

Question 46

What is the pressure in atmospheres of 0.100 moles of O₂ gas in a 2.0 Liter container at a temperature of 75 ° C?

A) 0.308 atm
B) 0.700 atm
C) 1.43 atm
D) 3.25 atm
E) 5.71 atm

Question 47

A helium weather balloon, when released, has a volume of 10.0 L at 27.0 ° C and a pressure of 663 mm Hg. What volume, in liters, will the balloon occupy at an altitude where the pressure is 96 mm Hg and the temperature is - 30.0 ° C?

A) - 76.7 L
B) 1.17 L
C) 1.79 L
D) 55.9 L
E) 85.3 L

Question 48

What is the pressure in atmospheres for a 0.250 mole sample of CO₂ gas that is held at 35 ° C in a 2.00 Liter container?

A) 0.316 atm
B) 0.359 atm
C) 3.16 atm
D) 5.75 atm
E) 12.6 atm

Question 49

A sample of carbon dioxide, CO₂, gas has a volume of 15.2 L at a pressure of 1.35 atm and a temperature of 583 ° C. What is the temperature in degrees Celsius of this same sample of carbon dioxide gas at a pressure of 7.00 atm and a volume of 0.973 L?

A) - 117 ° C
B) 11.0 ° C
C) 99.4 ° C
D) 102 ° C
E) 922 ° C

Question 50

What pressure will 4.2 g of O₂ gas exert in a 4.0 L container at 27 ° C?

A) 0.60 atm
B) 0.81 atm
C) 1.2 atm
D) 2.4 atm
E) none of these

Question 51

What is the volume of a container if 3.11 mol of a gas at 1.22 atm of pressure is at a temperature of 27 ° C?

A) 1.33 L
B) 62.8 L
C) 23.4 L
D) 84.2 L
E) none of these

Question 52

What is the pressure inside a 3.2 L jar that contains 2.6 g of N₂ gas at a temperature of 27 ° C?

A) 0.71 atm
B) 0.064 atm
C) 2.2 atm
D) 20 atm
E) none of these

Question 53

What is the pressure of a container if 0.221 mol of a gas in a 1.22 L container is at a temperature of 27 ° C?

A) 4.11 atm
B) 3.22 atm
C) 4.46 atm
D) 0.212 atm
E) none of these

Question 54

A fixed quantity of a gas at 25 ° C, occupies a volume of 5.00 L at 1.00 atm. What is the final temperature of this same gas if the pressure is increased to 2.00 atm and the volume is doubled to 10.0 L?

A) 75 ° C
B) 100 ° C
C) 919 ° C
D) 1192 ° C
E) 1465 ° C

Question 55

A sample of carbon dioxide gas has a volume of 15.2 L at a pressure of 1.35 atm and a temperature of 33 ° C. What is the temperature of this same gas in degrees celsius when the pressure is increased to 7.00 atm and the volume is decreased to 0.973 L?

A) - 171 ° C
B) 11.0 ° C
C) 101 ° C
D) 374 ° C
E) 649 ° C

Question 56

A sample of carbon dioxide, CO₂, gas has a volume of 364 mL at a pressure of 2.45 atm and a temperature of 100 ° C. What is the pressure of this same sample in atmospheres at a temperature of 225 ° C and a volume oF₄52 mL?

A) 0.80 atm
B) 0.877 atm
C) 1.48 atm
D) 2.63 atm
E) 4.44 atm

Question 57

What is the volume in liters of a container that holds 0.500 moles of O₂ gas at 20.0 ° C, and 0.750 atm?

A) 6.24×10 ^{- 2} L
B) 1.09 L
C) 9.02 L
D) 13.3 L
E) 16.0 L

Question 58

What is the volume in liters of a container that holds 0.100 moles of O₂ gas at 10.0 ° C, and 2.00 atm?

A) 0.0411 L
B) 0.164 L
C) 1.16 L
D) 2.00 L
E) 4.65 L

Question 59

What is the volume in liters of a sample of carbon monoxide at - 10 ° C and 389 torr if it occupies 3.65 L at 298 K and 770 torr?

A) - 55.0 L
B) 1.63 L
C) 2.09 L
D) 6.38 L
E) 8.19 L

Question 60

A sample of CO gas has a volume of 7.31 L at a pressure of 735 mm of Hg and a temperature oF₄5 ° C. What would be the temperature in degrees Celsius of this same amount of gas at a pressure of 1275 mm of Hg and a volume of 0.800 L?

A) - 213 ° C
B) 8.5 ° C
C) 60.4 ° C
D) 333 ° C
E) 1402 ° C

Question 61

How many moles are present in a 2.00 L sample of gas at 30 ° C and 0.821 atm?

A) 18.5 mol
B) 1.50 mol
C) 0.667 mol
D) 6.60×10 ^{- 2} mol
E) none of these

Question 62

What is the molar mass of a gas if a 17.6 g sample exerts a pressure of 2.0 atm in a 4.0 L container at 27 ° C?

A) 54 g/mol
B) 42 g/mol
C) 66 g/mol
D) 28 g/mol
E) none of these

Question 63

What is the molar mass of a gas at 374 torr and 45 ° C if 0.216 grams occupies a container that is 0.206 Liters?

A) 7.87 g/mol
B) 50.6 g/mol
C) 55.6 g/mol
D) 1.76×10⁴ g/mol
E) 3.78×10⁵ g/mol

Question 64

A sample of chlorine gas is confined in a 6.20 liter container at 202 torr and 27 ° C. How many grams of chlorine gas are present in the sample?
Molar Mass(Cl₂) = 70.90 g/mol

A) 0.0669 g Cl₂
B) 0.743 g Cl₂
C) 4.74 g Cl₂
D) 50.8 g Cl₂
E) 52.7 g Cl₂

Question 65

What is the density of O₂ gas at 24 ° C and 1.00 atm?

A) 1.31 g/L
B) 1.51 g/L
C) 1.81 g/L
D) 0.931 g/L
E) none of these

Question 66

What is the molar mass of a gas if 5.0 g occupies 8.2 L at 0.500 atm and 27 ° C?

A) 40 g/mol
B) 30 g/mol
C) 15 g/mol
D) 45 g/mol
E) none of these

Question 67

What is the density of a sample of O₂ gas if it exerts a pressure of 1.38 atm at 300 K?

A) 8.20 g/L
B) 0.210 g/L
C) 2.42 g/L
D) 1.79 g/L
E) none of these

Question 68

What is the molar mass of a gas if 10 g occupies 8.2 L at 380 torr and 27 ° C?

A) 90 g/mol
B) 30 g/mol
C) 60 g/mol
D) 80 g/mol
E) none of these

Question 69

What is the temperature of a 1.00 L container if 0.0112 mol of a gas is at 721 torr of pressure?

A) 435 ° C
B) 982 ° C
C) 255 ° C
D) 759 ° C
E) none of these

Question 70

What mass of N₂ gas is in a 4.20 L container at a pressure of 1.10 atm at 27 ° C?

A) 58.4 g
B) 73.5 g
C) 5.25 g
D) 10.2 g
E) none of these

Question 71

How many moles of chlorine, Cl₂, gas is present if this gas is contained in a 9.22 L vessel at 1124 torr and 24 ° C?

A) 0.145 moles Cl₂
B) 0.559 moles Cl₂
C) 1.79 moles Cl₂
D) 6.92 moles Cl₂
E) 425 mole Cl₂

Question 72

Which gas would be the densest at 1.00 atm and 298 K?

A) CO₂
B) N₂O
C) Cl₂
D) All of these gases have an identical density at 298 K
E) There is not enough information to determine which gas is most dense.

Question 73

What is the density of SO₂ gas at 211 ° C and 1.00 atm?

A) 1.33 g/L
B) 1.61 g/L
C) 1.88 g/L
D) 0.921 g/L
E) none of these

Question 74

What is the molar mass of a gas if 16 g occupy 3.0 L at 2.2 atm and 27 ° C?

A) 30 g/mol
B) 45 g/mol
C) 60 g/mol
D) 90 g/mol
E) none of these

Question 75

What is the density of SF₆ gas at 105 ° C and 1.6 atm?
MM(SF₆) = 146.07 g/mol

A) 0.18 g/L
B) 0.34 g/L
C) 7.5 g/L
D) 27 g/L
E) 50 g/L

Question 76

How many moles of neon gas are present in a 10.0 L vessel, if the pressure of this gas equals 1.05 atm at 30 ° C?

A) 0.235 moles Ne
B) 0.422 moles Ne
C) 2.37 moles Ne
D) 4.26 moles Ne
E) 3.88×10⁴ moles Ne

Question 77

How many moles of a gas occupy a volume of 5.0 L and exhibit a pressure of 775 torr at 25 ° C?

A) 0.21 moles
B) 2.5 moles
C) 4.8 moles
D) 160 moles
E) 1900 moles

Question 78

What is the density of Freon - 11 (CFCl₃) gas at 105 ° C and 1.6 atm?
Molar Mass(CFCl₃) = 137.36 g/mol

A) 0.36 g/L
B) 7.1 g/L
C) 26 g/L
D) 2.8×10⁵ g/L
E) 4.0×10⁵ g/L

Question 79

How many grams of O₂ would be in a 1.0 L container at a pressure of 600 torr and temperature of 27 ° C?

A) 1.0 g
B) 4.2 g
C) 24.3 g
D) 0.36 g
E) 0.32 g

Question 80

What is the molar mass of a gas if 2.50 g occupies 0.875 L at 685 torr and 35 ° C?

A) 9.50 g/mol
B) 80.2 g/mol
C) 83.4 g/mol
D) 88.4 g/mol
E) None of these