Question 1

A 5.3 L flask of ideal neon gas (which is monatomic) is at a pressure of 6.0 atm and a temperature of  290 K.290 \mathrm {~K} .290 K.  The atomic mass of neon is 20.2 g/mol.What is the mass of the neon gas in the flask.(R = 8.31 J/mol ∙ K,1 atm = 101 kPa,NA = 6.022 × 1023 molecules/mol)

Accepted Answer

A)  2.7 × 10-2
B)  1.6 × 10-2
C)  1.3 × 101
D)  2.7 × 101
E)  2.7 × 103

Question 2

A 4.2-L flask of ideal neon gas (which is monatomic) is at a pressure of 3.3 atm and a temperature of 450 K.The atomic mass of neon is 20.2 g/mol.How many neon atoms are in the flask? (R = 8.31 J/mol ∙ K,1 atm = 101 kPa,NA = 6.022 × 1023 molecules/mol)

Accepted Answer

A)  2.3 × 1023
B)  2.3 × 1022
C)  6.9 × 1023
D)  2.3 × 1025
E)  6.9 × 1022

Question 3

If the temperature of an ideal gas is increased from 20°C to 40°C,by what percent does the speed of the molecules increase?

Accepted Answer

A)  3%
B)  30%
C)  70%
D)  100%

Question 4

If an ideal gas molecule has a speed of 0.50 km/s at 20°C,what is its speed at 80°C?

Accepted Answer

A)  500 m/s
B)  550 m/s
C)  1000 m/s
D)  2000 m/s B

Question 5

A 900-N person is standing on snowshoes.Each snowshoe has area 2500 cm2 and has negligible weight.What pressure does this person's exert on the snow due to his interaction with Earth?

Accepted Answer

A)  0.18 N/m2
B)  0.36 N/m2
C)  1800 N/m2
D)  3600 N/m2

Question 6

At what,if any,temperature are the numerical readings on the Fahrenheit and Celsius scales the same?

Accepted Answer

A)  -30°
B)  -40°
C)  -50°
D)  -60°
E)  They can never read the same because they are based on different zeroes.

Question 7

Express a body temperature 98.6°F in Celsius degrees.

Accepted Answer

A)  37.0°C
B)  45.5°C
C)  66.6°C
D)  72.6°C A

Question 8

The temperature in your classroom is closest to

Accepted Answer

A)  68 K.
B)  68°C.
C)  50°C.
D)  295 K.

Question 9

A sample of an ideal gas is heated and its Kelvin temperature doubles.If the root-mean-square speed of its molecules was originally v,what is the new root-mean-square speed?

Accepted Answer

A)  4v
B)  2v
C)  v  2\sqrt { 2 }2c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5,-10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8,-50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0,35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5,-221l0 -0c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422s-65,47,-65,47zM834 80h400000v40h-400000z'/>​ 
D)  v/  2\sqrt { 2 }2c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5,-10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8,-50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0,35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5,-221l0 -0c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422s-65,47,-65,47zM834 80h400000v40h-400000z'/>​ 
E)  v/4

Question 10

A car starts out when the air temperature is 288 K and the absolute (total) air pressure in the tires is 500 kPa.After driving a while,the temperature of the air in the tires increases to 298 K.What is the pressure in the tires at that point,assuming their volume does not change?

Accepted Answer

A)  129 kPa
B)  483 kPa
C)  507 kPa
D)  517 kPa
E)  532 kPa

Question 11

A 0.40-  m3m ^ { 3 }m3  gas tank holds 7.0 moles of ideal diatomic nitrogen gas at a temperature of  290 K.290 \mathrm {~K} .290 K.  The atomic mass of nitrogen is  14.0 g/mol14.0 \mathrm {~g} / \mathrm { mol }14.0 g/mol  What is the pressure of the gas? (R = 8.31 J/mol ∙ K,1 atm = 101 kPa)

Accepted Answer

A)  42 atm
B)  37 atm
C)  32 atm
D)  27 atm
E)  22 atm

Question 12

A vertical cylinder,closed at the bottom end,contains 0.0100 mol of ideal gas.It is fitted at the top with a piston that can move freely.The mass of the piston is 14.0 kg and the initial height of the piston above the bottom of the cylinder is 25 cm.What is the temperature of the gas? (R = 8.31 J/mol ∙ K)

Accepted Answer

A)  290 K
B)  413 K
C)  3620 K
D)  405 K
E)  500 K

Question 13

A plastic block of dimensions 2.00 cm × 3.00 cm × 4.00 cm has a mass of 30.0 g.What is its density?

Accepted Answer

A)  0.80 g/cm3
B)  1.20 g/cm3
C)  1.25 g/cm3
D)  1.60 g/cm3

Question 14

At what temperature would the root mean square speed of oxygen molecules,O2,be  14.0 m/s14.0 \mathrm {~m} / \mathrm { s }14.0 m/s  if oxygen behaves like an ideal gas? The mass of one O2 molecule is 5.312 × 10-26 kg,and the Boltzmann constant is 1.38 × 10-23 J/K.

Accepted Answer

A)  0.251 K
B)  2090 K
C)  6270 K
D)  1.52 × 1023 K  A

Question 15

A flask contains a mixture of argon and neon gases at a stabilized temperature.The root-mean-square speed of the argon gas is determined to be 1.21 km/s.What is the root-mean-square speed of the neon gas? The atomic mass of argon is 39.95 g/mol,and that of neon is 20.18 g/mol.

Accepted Answer

The answer of A flask contains a mixture of argon...

Question 16

Originally 2.00 mol of gas are at standard temperature and pressure If the temperature changes to 47.0°C and the pressure decreases to half of what it was,how many liters do the two moles now occupy? (1 atm = 101 kPa,R = 8.31 J/mol ∙ K)

Accepted Answer

The answer of Originally 2.00 mol of gas are at...

Question 17

How many moles are there in 2.00 kg of copper? The atomic mass of copper is 63.5 g/mol and its density is 8.90 g/cm3.

Accepted Answer

A)  15.3
B)  31.5
C)  51.3
D)  53.1

Question 18

Calculate the pressure exerted on the ground due to   a 79−kg	ext { a } 79 - \mathrm { kg } a 79−kg  person standing on one foot if the bottom of the person's foot is  13 cm13 \mathrm {~cm}13 cm  wide and  28 cm28 \mathrm {~cm}28 cm  long.

Accepted Answer

A)  2.1 × 104 Pa
B)  2.2 × 103 Pa
C)  4.8 × 104 Pa
D)  5.3 × 104 Pa

Question 19

The absolute temperature of a gas is T.In order to double the rms speed of its molecules,what should be the new absolute temperature?

Accepted Answer

A)  4T
B)  2T
C)  T  2\sqrt { 2 }2c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5,-10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8,-50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0,35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5,-221l0 -0c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422s-65,47,-65,47zM834 80h400000v40h-400000z'/>​ 
D)  8T
E)  16T

Question 20

(a)At what Celsius temperature is the average kinetic energy of a helium gas atom equal to 6.21 × 10-21 J? The Boltzmann constant is 1.38 × 10-23 J/K .
(b)What would be the temperature for radon gas?

Accepted Answer

Exam 10: Gases

A 5.3 L flask of ideal neon gas (which is monatomic) is at a pressure of 6.0 atm and a temperature of $290 \mathrm {~K} .$ The atomic mass of neon is 20.2 g/mol.What is the mass of the neon gas in the flask.(R = 8.31 J/mol ∙ K,1 atm = 101 kPa,N_A = 6.022 × 10²³ molecules/mol)

Correct Answer
verified

A 4.2-L flask of ideal neon gas (which is monatomic) is at a pressure of 3.3 atm and a temperature of 450 K.The atomic mass of neon is 20.2 g/mol.How many neon atoms are in the flask? (R = 8.31 J/mol ∙ K,1 atm = 101 kPa,N_A = 6.022 × 10²³ molecules/mol)

Correct Answer
verified

If the temperature of an ideal gas is increased from 20°C to 40°C,by what percent does the speed of the molecules increase?

Correct Answer
verified

If an ideal gas molecule has a speed of 0.50 km/s at 20°C,what is its speed at 80°C?

Correct Answer
verified
B

A 900-N person is standing on snowshoes.Each snowshoe has area 2500 cm² and has negligible weight.What pressure does this person's exert on the snow due to his interaction with Earth?

Correct Answer
verified

At what,if any,temperature are the numerical readings on the Fahrenheit and Celsius scales the same?

Correct Answer
verified

Express a body temperature 98.6°F in Celsius degrees.

Correct Answer
verified
A

The temperature in your classroom is closest to

Correct Answer
verified

A sample of an ideal gas is heated and its Kelvin temperature doubles.If the root-mean-square speed of its molecules was originally v,what is the new root-mean-square speed?

Correct Answer
verified

A car starts out when the air temperature is 288 K and the absolute (total) air pressure in the tires is 500 kPa.After driving a while,the temperature of the air in the tires increases to 298 K.What is the pressure in the tires at that point,assuming their volume does not change?

Correct Answer
verified

A 0.40- $m ^ { 3 }$ gas tank holds 7.0 moles of ideal diatomic nitrogen gas at a temperature of $290 \mathrm {~K} .$ The atomic mass of nitrogen is $14.0 \mathrm {~g} / \mathrm { mol }$ What is the pressure of the gas? (R = 8.31 J/mol ∙ K,1 atm = 101 kPa)

Correct Answer
verified

Correct Answer
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A plastic block of dimensions 2.00 cm × 3.00 cm × 4.00 cm has a mass of 30.0 g.What is its density?

Correct Answer
verified

At what temperature would the root mean square speed of oxygen molecules,O₂,be $14.0 \mathrm {~m} / \mathrm { s }$ if oxygen behaves like an ideal gas? The mass of one O₂ molecule is 5.312 × 10^-26 kg,and the Boltzmann constant is 1.38 × 10^-23 J/K.

Correct Answer
verified
A

A flask contains a mixture of argon and neon gases at a stabilized temperature.The root-mean-square speed of the argon gas is determined to be 1.21 km/s.What is the root-mean-square speed of the neon gas? The atomic mass of argon is 39.95 g/mol,and that of neon is 20.18 g/mol.

Correct Answer
verified

Originally 2.00 mol of gas are at standard temperature and pressure If the temperature changes to 47.0°C and the pressure decreases to half of what it was,how many liters do the two moles now occupy? (1 atm = 101 kPa,R = 8.31 J/mol ∙ K)

Correct Answer
verified

How many moles are there in 2.00 kg of copper? The atomic mass of copper is 63.5 g/mol and its density is 8.90 g/cm³.

Correct Answer
verified

Calculate the pressure exerted on the ground due to $\text { a } 79 - \mathrm { kg }$ person standing on one foot if the bottom of the person's foot is $13 \mathrm {~cm}$ wide and $28 \mathrm {~cm}$ long.

Correct Answer
verified

The absolute temperature of a gas is T.In order to double the rms speed of its molecules,what should be the new absolute temperature?

Correct Answer
verified

(a)At what Celsius temperature is the average kinetic energy of a helium gas atom equal to 6.21 × 10^-21 J? The Boltzmann constant is 1.38 × 10^-23 J/K . (b)What would be the temperature for radon gas?

Correct Answer
verified

Exam 10: Gases

A 5.3 L flask of ideal neon gas (which is monatomic) is at a pressure of 6.0 atm and a temperature of 290 K.290 \mathrm {~K} .290 K. The atomic mass of neon is 20.2 g/mol.What is the mass of the neon gas in the flask.(R = 8.31 J/mol ∙ K,1 atm = 101 kPa,NA = 6.022 × 1023 molecules/mol)

Correct AnswerverifiedShow Answer

A 4.2-L flask of ideal neon gas (which is monatomic) is at a pressure of 3.3 atm and a temperature of 450 K.The atomic mass of neon is 20.2 g/mol.How many neon atoms are in the flask? (R = 8.31 J/mol ∙ K,1 atm = 101 kPa,NA = 6.022 × 1023 molecules/mol)

Correct AnswerverifiedShow Answer

If the temperature of an ideal gas is increased from 20°C to 40°C,by what percent does the speed of the molecules increase?

Correct AnswerverifiedShow Answer

If an ideal gas molecule has a speed of 0.50 km/s at 20°C,what is its speed at 80°C?

Correct AnswerverifiedB

A 900-N person is standing on snowshoes.Each snowshoe has area 2500 cm2 and has negligible weight.What pressure does this person's exert on the snow due to his interaction with Earth?

Correct AnswerverifiedShow Answer

At what,if any,temperature are the numerical readings on the Fahrenheit and Celsius scales the same?

Correct AnswerverifiedShow Answer

Express a body temperature 98.6°F in Celsius degrees.

Correct AnswerverifiedA

The temperature in your classroom is closest to

Correct AnswerverifiedShow Answer

A sample of an ideal gas is heated and its Kelvin temperature doubles.If the root-mean-square speed of its molecules was originally v,what is the new root-mean-square speed?

Correct AnswerverifiedShow Answer

A car starts out when the air temperature is 288 K and the absolute (total) air pressure in the tires is 500 kPa.After driving a while,the temperature of the air in the tires increases to 298 K.What is the pressure in the tires at that point,assuming their volume does not change?

Correct AnswerverifiedShow Answer

A 0.40- m3m ^ { 3 }m3 gas tank holds 7.0 moles of ideal diatomic nitrogen gas at a temperature of 290 K.290 \mathrm {~K} .290 K. The atomic mass of nitrogen is 14.0 g/mol14.0 \mathrm {~g} / \mathrm { mol }14.0 g/mol What is the pressure of the gas? (R = 8.31 J/mol ∙ K,1 atm = 101 kPa)

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A plastic block of dimensions 2.00 cm × 3.00 cm × 4.00 cm has a mass of 30.0 g.What is its density?

Correct AnswerverifiedShow Answer

At what temperature would the root mean square speed of oxygen molecules,O2,be 14.0 m/s14.0 \mathrm {~m} / \mathrm { s }14.0 m/s if oxygen behaves like an ideal gas? The mass of one O2 molecule is 5.312 × 10-26 kg,and the Boltzmann constant is 1.38 × 10-23 J/K.

Correct AnswerverifiedA

A flask contains a mixture of argon and neon gases at a stabilized temperature.The root-mean-square speed of the argon gas is determined to be 1.21 km/s.What is the root-mean-square speed of the neon gas? The atomic mass of argon is 39.95 g/mol,and that of neon is 20.18 g/mol.

Correct AnswerverifiedShow Answer

Originally 2.00 mol of gas are at standard temperature and pressure If the temperature changes to 47.0°C and the pressure decreases to half of what it was,how many liters do the two moles now occupy? (1 atm = 101 kPa,R = 8.31 J/mol ∙ K)

Correct AnswerverifiedShow Answer

How many moles are there in 2.00 kg of copper? The atomic mass of copper is 63.5 g/mol and its density is 8.90 g/cm3.

Correct AnswerverifiedShow Answer

Calculate the pressure exerted on the ground due to a 79−kg\text { a } 79 - \mathrm { kg } a 79−kg person standing on one foot if the bottom of the person's foot is 13 cm13 \mathrm {~cm}13 cm wide and 28 cm28 \mathrm {~cm}28 cm long.

Correct AnswerverifiedShow Answer

The absolute temperature of a gas is T.In order to double the rms speed of its molecules,what should be the new absolute temperature?

Correct AnswerverifiedShow Answer

(a)At what Celsius temperature is the average kinetic energy of a helium gas atom equal to 6.21 × 10-21 J? The Boltzmann constant is 1.38 × 10-23 J/K . (b)What would be the temperature for radon gas?

Correct AnswerverifiedShow Answer

A 5.3 L flask of ideal neon gas (which is monatomic) is at a pressure of 6.0 atm and a temperature of $290 \mathrm {~K} .$ The atomic mass of neon is 20.2 g/mol.What is the mass of the neon gas in the flask.(R = 8.31 J/mol ∙ K,1 atm = 101 kPa,N_A = 6.022 × 10²³ molecules/mol)

Correct Answer
verified

A 4.2-L flask of ideal neon gas (which is monatomic) is at a pressure of 3.3 atm and a temperature of 450 K.The atomic mass of neon is 20.2 g/mol.How many neon atoms are in the flask? (R = 8.31 J/mol ∙ K,1 atm = 101 kPa,N_A = 6.022 × 10²³ molecules/mol)

Correct Answer
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Correct Answer
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Correct Answer
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B

A 900-N person is standing on snowshoes.Each snowshoe has area 2500 cm² and has negligible weight.What pressure does this person's exert on the snow due to his interaction with Earth?

Correct Answer
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Correct Answer
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Correct Answer
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A

Correct Answer
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Correct Answer
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Correct Answer
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A 0.40- $m ^ { 3 }$ gas tank holds 7.0 moles of ideal diatomic nitrogen gas at a temperature of $290 \mathrm {~K} .$ The atomic mass of nitrogen is $14.0 \mathrm {~g} / \mathrm { mol }$ What is the pressure of the gas? (R = 8.31 J/mol ∙ K,1 atm = 101 kPa)

Correct Answer
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Correct Answer
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Correct Answer
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At what temperature would the root mean square speed of oxygen molecules,O₂,be $14.0 \mathrm {~m} / \mathrm { s }$ if oxygen behaves like an ideal gas? The mass of one O₂ molecule is 5.312 × 10^-26 kg,and the Boltzmann constant is 1.38 × 10^-23 J/K.

Correct Answer
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A

Correct Answer
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Correct Answer
verified

How many moles are there in 2.00 kg of copper? The atomic mass of copper is 63.5 g/mol and its density is 8.90 g/cm³.

Correct Answer
verified

Calculate the pressure exerted on the ground due to $\text { a } 79 - \mathrm { kg }$ person standing on one foot if the bottom of the person's foot is $13 \mathrm {~cm}$ wide and $28 \mathrm {~cm}$ long.

Correct Answer
verified

Correct Answer
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(a)At what Celsius temperature is the average kinetic energy of a helium gas atom equal to 6.21 × 10^-21 J? The Boltzmann constant is 1.38 × 10^-23 J/K . (b)What would be the temperature for radon gas?

Correct Answer
verified