Question 1

What is the molar mass of a gas whose density is 3.55 gL1 at 110C and a pressure of 736 Torr?

Accepted Answer

A)  15.4 gmol1 
B)  79.5 gmol1 
C)  115 gmol1 
D)  152 gmol1 
E)  33.1 gmol1

Question 2

The density of the vapor of allicin,a component of garlic,is 1.14 gL1 at 125C and 175 Torr.What is the molar mass of allicin?

Accepted Answer

A)  21.6 gmol1 
B)  50.8 gmol1 
C)  273 gmol1 
D)  869 gmol1 
E)  162 gmol1

Question 3

A mixture of oxygen and helium is 92.3% by mass oxygen.What is the partial pressure of oxygen if atmospheric pressure is 745 Torr?

Accepted Answer

A)  412 Torr
B)  446 Torr
C)  688 Torr
D)  333 Torr
E)  299 Torr

Question 4

Which of the following gases would you predict to have the smallest value of the van der Waals coefficient b?

Accepted Answer

A)  C2F2Cl4
B)  CO
C)  C2FCl5
D)  ClF3
E)  C2F6

Question 5

Calculate the mass of oxygen gas required to occupy a volume of 6.00 L at a pressure of 20.9 kPa and a temperature of 37.0C.

Accepted Answer

A)  1.56 g
B)  0.408 g
C)  0.779 g
D)  13.1 g
E)  0.0487 g

Question 6

Which molecules of the following gases will have the greatest root mean square speed?

Accepted Answer

A)  Nitrogen at 1 atm and 273 K
B)  All the molecules have the same root mean square speed.
C)  Hydrogen at 0.5 atm and 273 K
D)  Argon at 1 atm and 273 K
E)  Helium at 0.1 atm and 273 K

Question 7

What is the vapor pressure of geraniol,molar mass 155 g/mol,if the density of the vapor at 260C is 0.480 g/L?

Accepted Answer

A)  50.2 Torr
B)  103 Torr
C)  0.0661 Torr
D)  0.103 Torr

Question 8

The value of the gas law constant,R,in units of LkPamol1K1 is

Accepted Answer

A)  62.4
B)  0.0821
C)  0.0752
D)  7.62
E)  8.31

Question 9

A pressure of 2.50  105 kgm1s2 corresponds to

Accepted Answer

A)  1.00 atm
B)  760 mmHg
C)  253 kPa
D)  2.50  105 Torr
E)  2.50 Pa

Question 10

Ideal gases and real gases behave most similarly under which of the following conditions?

Accepted Answer

A)  Low temperatures and low pressures.
B)  Low temperatures and high pressures.
C)  High pressures and low molar masses.
D)  High temperatures and high pressures.
E)  High temperatures and low pressures.

Question 11

The root mean square speed of nitrogen molecules in air at 20F1F1F1S1F1F1F10C is 511 m/s in a certain container.If the gas is allowed to expand to twice its original volume,the root mean square velocity of nitrogen molecules drops to 325 m/s.Calculate the temperature after the gas has expanded.

Accepted Answer

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Question 12

How many atoms of argon occupy 20.00 mL if the temperature is 200°C and the pressure is 2.00 × 10-3 Torr?

Accepted Answer

A)  2.01  1017 
B)  6.02  10-17 
C)  3.10  1017 
D)  2.44  1019 
E)  2.80  1011

Question 13

The density of citronellal,a mosquito repellant,is 1.45 gL1 at 365C and 50.0 kPa.What is the molar mass of citronellal?

Accepted Answer

A)  73.2 gmol1 
B)  154 gmol1 
C)  95.7 gmol1 
D)  37.5 gmol1 
E)  88.0 gmol1

Question 14

The height of water in a water barometer is 883 cm at 20C.The density of water at 20C is 0.998 gcm3.What is the pressure?

Accepted Answer

A)  88.3 kPa
B)  8.81  103 Pa
C)  101 kPa
D)  8.64  103 Pa
E)  86.4 kPa

Exam 5: The Properties of Gases

Ideal gases and real gases behave most similarly under which of the following conditions?

Correct Answer
verified

The height of water in a water barometer is 883 cm at 20C.The density of water at 20C is 0.998 gcm^³.What is the pressure?

Correct Answer
verified

A pressure of 2.50  10⁵ kgm^¹s^² corresponds to

Correct Answer
verified

The root mean square speed of nitrogen molecules in air at 20C is 511 m/s in a certain container.If the gas is allowed to expand to twice its original volume,the root mean square velocity of nitrogen molecules drops to 325 m/s.Calculate the temperature after the gas has expanded.

Correct Answer
verified
F...
View Answer

Which of the following gases would you predict to have the smallest value of the van der Waals coefficient b?

Correct Answer
verified

The value of the gas law constant,R,in units of LkPamol^¹K^¹ is

Correct Answer
verified

What is the vapor pressure of geraniol,molar mass 155 g/mol,if the density of the vapor at 260C is 0.480 g/L?

Correct Answer
verified

How many atoms of argon occupy 20.00 mL if the temperature is 200°C and the pressure is 2.00 × 10-3 Torr?

Correct Answer
verified

A mixture of oxygen and helium is 92.3% by mass oxygen.What is the partial pressure of oxygen if atmospheric pressure is 745 Torr?

Correct Answer
verified

The density of the vapor of allicin,a component of garlic,is 1.14 gL^¹at 125C and 175 Torr.What is the molar mass of allicin?

Correct Answer
verified

What is the molar mass of a gas whose density is 3.55 gL^¹ at 110C and a pressure of 736 Torr?

Correct Answer
verified

Calculate the mass of oxygen gas required to occupy a volume of 6.00 L at a pressure of 20.9 kPa and a temperature of 37.0C.

Correct Answer
verified

The density of citronellal,a mosquito repellant,is 1.45 gL^¹ at 365C and 50.0 kPa.What is the molar mass of citronellal?

Correct Answer
verified

Which molecules of the following gases will have the greatest root mean square speed?

Correct Answer
verified

Exam 5: The Properties of Gases

Ideal gases and real gases behave most similarly under which of the following conditions?

Correct AnswerverifiedShow Answer

The height of water in a water barometer is 883 cm at 20C.The density of water at 20C is 0.998 gcm3.What is the pressure?

Correct AnswerverifiedShow Answer

A pressure of 2.50  105 kgm1s2 corresponds to

Correct AnswerverifiedShow Answer

The root mean square speed of nitrogen molecules in air at 20C is 511 m/s in a certain container.If the gas is allowed to expand to twice its original volume,the root mean square velocity of nitrogen molecules drops to 325 m/s.Calculate the temperature after the gas has expanded.

Correct AnswerverifiedF...View AnswerShow Answer

Which of the following gases would you predict to have the smallest value of the van der Waals coefficient b?

Correct AnswerverifiedShow Answer

The value of the gas law constant,R,in units of LkPamol1K1 is

Correct AnswerverifiedShow Answer

What is the vapor pressure of geraniol,molar mass 155 g/mol,if the density of the vapor at 260C is 0.480 g/L?

Correct AnswerverifiedShow Answer

How many atoms of argon occupy 20.00 mL if the temperature is 200°C and the pressure is 2.00 × 10-3 Torr?

Correct AnswerverifiedShow Answer

A mixture of oxygen and helium is 92.3% by mass oxygen.What is the partial pressure of oxygen if atmospheric pressure is 745 Torr?

Correct AnswerverifiedShow Answer

The density of the vapor of allicin,a component of garlic,is 1.14 gL1 at 125C and 175 Torr.What is the molar mass of allicin?

Correct AnswerverifiedShow Answer

What is the molar mass of a gas whose density is 3.55 gL1 at 110C and a pressure of 736 Torr?

Correct AnswerverifiedShow Answer

Calculate the mass of oxygen gas required to occupy a volume of 6.00 L at a pressure of 20.9 kPa and a temperature of 37.0C.

Correct AnswerverifiedShow Answer

The density of citronellal,a mosquito repellant,is 1.45 gL1 at 365C and 50.0 kPa.What is the molar mass of citronellal?

Correct AnswerverifiedShow Answer

Which molecules of the following gases will have the greatest root mean square speed?

Correct AnswerverifiedShow Answer

Correct Answer
verified

The height of water in a water barometer is 883 cm at 20C.The density of water at 20C is 0.998 gcm^³.What is the pressure?

Correct Answer
verified

A pressure of 2.50  10⁵ kgm^¹s^² corresponds to

Correct Answer
verified

Correct Answer
verified
F...
View Answer

Correct Answer
verified

The value of the gas law constant,R,in units of LkPamol^¹K^¹ is

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The density of the vapor of allicin,a component of garlic,is 1.14 gL^¹at 125C and 175 Torr.What is the molar mass of allicin?

Correct Answer
verified

What is the molar mass of a gas whose density is 3.55 gL^¹ at 110C and a pressure of 736 Torr?

Correct Answer
verified

Correct Answer
verified

The density of citronellal,a mosquito repellant,is 1.45 gL^¹ at 365C and 50.0 kPa.What is the molar mass of citronellal?

Correct Answer
verified

Correct Answer
verified