Deck 11: The Air Around Us

Question 1

What causes pressure?

A)Constant small fluctuations in temperature
B)Collisions of gas molecules with other gas molecules
C)Collisions of gas molecules with their container
D)Weather
E)None of the above

Answer 1

Collisions of gas molecules with their container

Question 2

The layer of air which surrounds the earth is known as the ____.

A)crust
B)pressure
C)atmosphere
D)gas constant
E)Boyle's constant

Answer 2

atmosphere

Question 3

Pressure is defined as:

A)force times unit area.
B)mass times acceleration.
C)mass divided by density.
D)force divided by unit area.
E)mass divided by acceleration.

Answer 3

force divided by unit area.

Question 4

Which of these is the correct representation of Boyle's law?

A)PV = k
B)V\T = k
C)P\V = k
D)V\P = k
E)VT = k

Question 5

In a sample of a nearly ideal gas, this graph could represent a plot of
​

A)Boyle's law, V vs. T at a given constant P.
B)Charles's law, P vs. T at a given constant V.
C)Boyle's law, P vs. V at a given constant T.
D)Dalton's law, PV vs. P at a given constant T.
E)Avogadro's law, P vs. n at a constant T.

Question 6

Which of these is not a possible unit for pressure?

A)in. Hg
B)psi
C)torr
D)mm Hg
E)lb\s

Question 7

Which of these is not a possible unit for pressure?

A)mm Hg
B)psi
C)torr
D)atm
E)J\s

Question 8

According to Boyle's law, if the pressure of a gas is increased by a factor of four then the ____ of a gas is ____ by a factor of ____.

A)volume, increased, four
B)volume, decreased, four
C)volume, increased, fourteen
D)temperature, increased, four
E)temperature, decreased, four

Question 9

A balloon contains 14.0 L of air at a pressure of 760 torr. What will be the volume of the air when the balloon is taken to a region with a pressure of 981 torr at the same temperature ?

A)1.3 L
B)8.2 L
C)10.8 L
D)14.0 L
E)18 L

Question 10

What is the correct conversion factor between atmospheres and torr?

A)1 atm = 1 torr
B)1 atm = 760 torr
C)760 atm = 1 torr
D)1 atm = 29.92 torr

Question 11

Which of these is the correct representation of Charles's Law?

A)PV = k
B)V\T = k
C)P\V = k
D)V\P = k
E)VT = k

Question 12

A sample of Freon gas in an air conditioner has a volume of 325 L and pressure of 96,300 Pa at 20 ° C. What will the pressure the Freon be when the volume is 975 L at 20 ° C?

A)1975 Pa
B)3.2 × 10⁴ Pa
C)2.89 × 10⁵ Pa
D)3.1 × 10⁷ Pa
E)9.4 × 10⁷ Pa

Question 13

A sample of acetylene gas occupies a volume of 47.2 L under a pressure of 1.63 atm at 25 ° C. What volume will the acetylene occupy if the pressure is decreased to 0.961 atm at 25 ° C?

A)27.8 L
B)30.0 L
C)32.3 L
D)47.8 L
E)80.1 L

Question 14

Which of these statements about pressure is \are  incorrect ?
I. Pressure is directly proportional to the number of gas molecules.
II. Pressure is directly proportional to temperature.
III. Pressure is directly proportional to volume.

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

Question 15

Which of the following is the formula for the chemical compound found in airbags?

A)Na₃N
B)NaN₃
C)Na₂O
D)NaO₂

Question 16

Which of these statements concerning pressure and weather are correct ?
I. Low pressure in a region tends to draw in storms.
II. High pressure in a region usually indicates clear weather.
III. Changes in pressure from region to region are responsible for winds.

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

Question 17

A gas contained in a piston has a pressure of 100. torr and a volume of 1.0 L. Determine the pressure of the gas if it is compressed to a volume of 0.75 L at the same temperature .

A)25 torr
B)55 torr
C)75 torr
D)133 torr
E)150 torr

Question 18

Which of these is not a possible unit for pressure?

A)g\mL
B)lb\in²
C)Pa
D)N\m²
E)mm Hg

Question 19

Which of these laws describes the relationship between pressure and volume at a constant temperature?

A)Ideal Gas law
B)Boyle's law
C)Charles's law
D)Avogadro's law
E)Graham's law

Question 20

According to Boyle's law, if the pressure of a gas is decreased by a factor of five then the ____ of a gas is ____ by a factor of ____.

A)volume, increased, five
B)volume, decreased, 1\5^th
C)volume, increased, 15
D)temperature, increased, five
E)temperature, decreased, 1\5^th

Question 21

The temperature scale used in gas law problems_________.

A)must be Celsius
B)must be Kelvin
C)must be Fahrenheit
D)does not matter

Question 22

Which of these gases is the most abundant in the Earth's atmosphere?

A)O₂
B)N₂
C)H₂
D)He
E)CO₂

Question 23

Which of these is responsible for the rusting of metal and the dulling of paint?

A)N₂
B)O₂
C)Ar
D)He
E)CO₂

Question 24

The noble gas argon accounts for approximately what % of the earth's atmosphere?

A)10%
B)1%
C)0.1%
D)0.01%
E)0.001%

Question 25

Rank these gases in order of their abundance in the atmosphere (least to greatest).
(O₂, N₂, Ar, Ne, CO₂)

A)O₂ < N₂ < Ar < Ne < CO₂
B)N₂ < O₂ < Ar < Ne < CO₂
C)Ar < Ne < CO₂ < O₂ < N₂
D)Ne < CO₂ < Ar < O₂ < N₂
E)CO₂ < Ne < Ar < O₂ < N₂

Question 26

According to Charles's law, if the volume of a gas is increased by a factor of ten then the ____ of a gas is ____ by a factor of ____.

A)volume, increased, ten
B)volume, decreased, ten
C)volume, increased, 1\10^th
D)temperature, increased, ten
E)temperature, decreased, ten

Question 27

A sample of gas occupies 30.0 L at 0 ° C and 1 atm. What temperature will the same gas have in a 22.5 L container with a pressure of 3.5 atm?

A)212 ° C
B)284 ° C
C)386 ° C
D)444 ° C
E)516 ° C

Question 28

A sample of carbon dioxide at 10.0 ° C has a volume of 300. mL at 760. torr. What is the volume of the gas at 30.0 ° C and 760. torr?

A)275 mL
B)280 mL
C)321 mL
D)755 mL
E)900 mL

Question 29

The volume of 350. mL of gas at 25.0 ° C is decreased to 125 mL at constant pressure. What is the final temperature of the gas?

A)− 167 ° C
B)− 126 ° C
C)70 ° C
D)89 ° C
E)147 ° C

Question 30

What is the approximate composition of the earth's atmosphere?

A)80 % oxygen and 20 % nitrogen
B)80 % nitrogen and 20 % oxygen
C)50 % nitrogen and 50 % oxygen
D)100 % oxygen
E)100 % nitrogen

Question 31

If a gas sample is doubled in pressure and doubled in temperature, the volume will be:

A)a fourth of the original volume.
B)half of the original volume.
C)the same as the original volume.
D)twice the original volume.
E)four times the original volume.

Question 32

A sample of nitrogen at pressure P is contained in a sealed syringe with a movable piston. If the volume of the sample were doubled and the absolute temperature tripled, the new pressure of the gas would be:

A)6.0 P
B)5.0 P
C)3.5 P
D)1.5 P
E)0.5 P

Question 33

According to Charles's law, if the volume of a gas is decreased by a factor of three then the ____ of a gas is ____ by a factor of ____.

A)volume, increased, three
B)volume, decreased, 1\3^th
C)volume, increased, 9
D)temperature, increased, three
E)temperature, decreased, three

Question 34

A basketball is inflated to a pressure of 1.50 atm in a 20.0 ° C garage. What is the pressure of the basketball outside where the temperature is − 5.00 ° C?

A)0.375 atm
B)1.37 atm
C)1.42 atm
D)1.67 atm
E)3.01 atm

Question 35

Combining Charles's law and Boyle's law results in which equation?

A)PVT = k
B)PT\V = k
C)P\VT = k
D)PV\T = k
E)None of the above

Question 36

Rank these gases in order of their abundance in the atmosphere (least to greatest).
​
(O₂, N₂, H₂, He, CO₂)

A)O₂ < N₂ < H₂ < He < CO₂
B)N₂ < O₂ < H₂ < He < CO₂
C)H₂ < He < CO₂ < O₂ < N₂
D)H₂ < He < O₂ < CO₂ < N₂
E)CO₂ < He < H₂ < O₂ < N₂

Question 37

Which of these gases is \are  not a part (either as a reactant or as a product)of the biochemical reaction known as respiration?
I. N₂
II. O₂
III. H₂O
IV. CO₂

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

Question 38

Which of these gases is broken down by bacteria in the soil and used directly by plants?

A)N₂
B)O₂
C)Ar
D)He
E)CO₂

Question 39

A sample of oxygen with a volume of V is contained in a sealed syringe with a movable piston. If the pressure of the sample were halved and the absolute temperature tripled, what would be the new volume of the gas?

A)6.0 V
B)5.0 V
C)3.5 V
D)1.5 V
E)0.5 V

Question 40

A sample of helium occupies 1.40 L at 0 ° C and 760 torr. What pressure will the same gas exert in a 0.500 L vessel at 100 ° C?

A)371 torr
B)624 torr
C)1.56 × 10³ torr
D)2.91 × 10³ torr
E)4.05 × 10³ torr

Question 41

Which of these gases is absorbed by the earth's oceans, later forming rocks and sedimentation?

A)N₂
B)O₂
C)Ar
D)He
E)CO₂

Question 42

Which region of the Earth's atmosphere supports all earth-bound life?

A)Firstosphere
B)Mesosphere
C)Stratosphere
D)Troposphere
E)Ionosphere

Question 43

Meteors burn up in this region of the atmosphere.

A)Firstosphere
B)Mesosphere
C)Stratosphere
D)Troposphere
E)Ionosphere

Question 44

Which of these pollutants diminishes the bloods ability to carry oxygen?

A)CO
B)PM-2.5
C)SO₂
D)O₃
E)Pb

Question 45

Which statement is correct?

A)UV-A is more harmful to humans than UV-B.
B)UV-B is more harmful to humans than UV-A.
C)UV-A and UV-B are equally harmful to humans.
D)Neither UV-A or UV-B is harmful to humans.

Question 46

Which of these pollutants gives smog its characteristic brown color?

A)CO
B)NO₂
C)SO₂
D)O₃
E)Pb

Question 47

Which of these gases is\ are considered inert and unreactive?
I. Ne
II. O₂
III. Ar
IV. CO₂

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

Question 48

Which region of the atmosphere is credited with the phenomena known as aurora borealis or the northern lights?

A)Firstosphere
B)Mesosphere
C)Stratosphere
D)Troposphere
E)Ionosphere

Question 49

Which of these pollutants can contribute to damage to the kidneys, liver, and nervous system?

A)CO
B)NO₂
C)SO₂
D)O₃
E)Pb

Question 50

Which of these acts as a pollutant in the troposphere, but as a UV shield in the stratosphere?

A)CO
B)PM-2.5
C)SO₂
D)O₃
E)Pb

Question 51

Nitrogen fixation converts nitrogen to ________.

A)cellulose
B)nitrates
C)nitrogen oxides
D)nitric acid

Question 52

According to data obtained by NAAQS, which of these pollutants is the most prominent pollutant problem in the United States?

A)CO
B)NO₂
C)SO₂
D)O₃
E)Pb

Question 53

Which of these processes is represented by the equation?
​
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + energy

A)Nitrogen fixation
B)Combustion
C)Photosynthesis
D)Respiration
E)Ozone depletion

Question 54

Which of these pollutants is produced primarily by forest fires, power plants, industries and automobile exhaust?

A)SO₂
B)PM-2.5
C)CO
D)O₃
E)Pb

Question 55

Which of is not a risk factor of excessive exposure to UV-B rays?

A)Skin cancer
B)Premature aging
C)Cataracts
D)Depressed immune system
E)All of these are risk factors.

Question 56

18 ppm equals

A)0.18%
B)0.018%
C)0.0018%
D)0.00018%

Question 57

Which of these processes is represented by the equation?
​
6H₂O + 6CO₂ + energy → C₆H₁₂O₆ + 6O₂

A)Nitrogen fixation
B)Combustion
C)Photosynthesis
D)Respiration
E)Ozone depletion

Question 58

Which of these substances is \are  not important in the life-cycle of plants?
I. N₂
II. O₂
III. H₂O
IV. CO₂

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

Question 59

The "PM" in the abbreviation PM-2.5 stands for?

A)Primary mist
B)Pollutant material
C)Particulate matter
D)Particles of metal
E)None of the above

Question 60

Which of these gases is \are  not a part (either as a reactant or as a product)of the biochemical reaction known as photosynthesis?
I. N₂
II. O₂
III. H₂O
IV. CO₂

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

Question 61

Which of these is the correct ordering of the regions of the atmosphere from lowest altitude to highest altitude?

A)ionosphere < mesosphere < troposphere < stratosphere
B)stratosphere < ionosphere < troposphere < mesosphere
C)troposphere < stratosphere < mesosphere < ionosphere
D)troposphere < mesosphere < stratosphere < ionosphere
E)mesosphere < troposphere < stratosphere < ionosphere

Question 62

Which of these compounds is credited with the accelerated depletion of the ozone layer?

A)CO
B)CFCs
C)O₂
D)NO
E)SO₂

Question 63

Which of these elements is the reason that chemically decomposed ozone will not reform?

A)Carbon
B)Fluorine
C)Oxygen
D)Chlorine
E)Nitrogen

Question 64

Which of these processes is represented by the equation?
​
O₃ + UV light → O + O₂

A)UV absorption
B)Combustion
C)Photosynthesis
D)Respiration
E)Nitrogen fixation

Question 65

Which of these regions has the most significant ozone depletion?

A)North America
B)Eastern Europe
C)Antarctica
D)Middle East
E)Southern Africa

Question 66

Which of these compounds replaced CFCs used in refrigeration?

A)HCFCs
B)Freon-12
C)CO₂
D)N₂
E)silicon

Question 67

Which of these is not a source of chlorofluorocarbons?

A)Aerosol propellants
B)Refrigeration systems
C)Industrial solvents
D)Fast-food containers
E)Automobile exhaust