Each of three identical 15.0-L gas cylinders contains 7.50 mol of gas at 295 K.Cylinder A contains Ar,cylinder B contains Cl2,and cylinder C contains N2.According to the kinetic molecular theory,which gas has the highest average speed?

A) Ar B) Cl2 C) N2 D) All have identical average speeds A) Ar B) Cl2 C) N2 D) All have identical average speeds

Exam 9: Gases: Their Properties and Behavior

Each of three identical 15.0-L gas cylinders contains 7.50 mol of gas at 295 K.Cylinder A contains Ar,cylinder B contains Cl₂,and cylinder C contains N₂.According to the kinetic molecular theory,which gas has the highest average speed?

(Multiple Choice)

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Question 101

According to the kinetic molecular theory,the pressure of a gas in a container will decrease if the

(Multiple Choice)

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Question 102

The mixing of different gases by random molecular motion with frequent collisions is called

(Multiple Choice)

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Question 103

A 0.286-g sample of gas occupies 125 mL at 60.cm of Hg and 25°C.What is the molar mass of the gas?

(Multiple Choice)

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Question 104

In the diagram below,nitrogen molecules are represented by unshaded spheres,oxygen molecules by gray spheres,and chlorine molecules by black spheres. -If the total pressure in the container is 900 mm Hg,what is the partial pressure of oxygen?

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Question 105

What is the pressure in a gas container that is connected to an open-end U-tube manometer if the pressure of the atmosphere is 752 torr and the level of mercury in the arm connected to the container is 8.60 cm higher than the level of mercury open to the atmosphere?

(Multiple Choice)

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Question 106

-What is the pressure (in mm Hg)of the gas inside the above apparatus if the outside pressure,P_atm,is 745 mm Hg and the difference in mercury levels,Δh,is 25 mm Hg?

(Multiple Choice)

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Question 107

An "empty" aerosol can at 25°C still contains gas at 1.00 atmosphere pressure.If an "empty" can is thrown into a 475°C fire,what is the final pressure in the heated can?

(Multiple Choice)

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Question 108

Some assumptions from the kinetic molecular theory are listed below.Which one is most frequently cited to explain Charles' law?

(Multiple Choice)

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Question 109

According to the kinetic molecular theory of gases,raising the temperature of a gases increases the average kinetic energy and the frequency of ________.

(Short Answer)

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Question 110

What is the volume of 10.0 g of argon gas at 157°C and 2.50 kPa pressure?

(Multiple Choice)

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Question 111

Cyanogen is a gas which contains 46.2% C and 53.8% N by mass.At a temperature of 25°C and a pressure of 750 mm Hg,1.50 g of cyanogen occupies 0.714 L.What is the molecular formula of cyanogen?

(Multiple Choice)

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Question 112

Automobile tires are typically inflated to about 30 pounds of pressure per square inch.What is the typical air pressure of a tire in kPa?

(Multiple Choice)

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Question 113

Which of the following substances has increased markedly due to the use of fossil fuels and contributes to the greenhouse effect?

(Multiple Choice)

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Question 114

The major source of Cl atoms in the stratosphere is from

(Multiple Choice)

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Question 115

At STP the number of liters of O₂ required to react with 11.2 liters of CH₄ to form only CO₂ and H₂O is ________ liters.

(Short Answer)

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Question 116

What is the pressure in a gas container that is connected to an open-end U-tube manometer if the pressure of the atmosphere is 742 torr and the level of mercury in the arm connected to the container is 8.60 cm higher than the level of mercury open to the atmosphere?

(Multiple Choice)

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Question 117

Which statement about real gases is true?

(Multiple Choice)

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Question 118

"Equal volumes of different gases at the same temperature and pressure contain the same molar amounts" is another way of stating

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Question 119

Three bulbs,two of which contain different gases and one of which is empty,are connected as shown in drawing (a).Which drawing (b)- (d)best represents the system after the stopcocks are opened and the system is allowed to come to equilibrium?

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Question 120

Showing 101 - 120 of 182

Exam 9: Gases: Their Properties and Behavior

Each of three identical 15.0-L gas cylinders contains 7.50 mol of gas at 295 K.Cylinder A contains Ar,cylinder B contains Cl2,and cylinder C contains N2.According to the kinetic molecular theory,which gas has the highest average speed?

According to the kinetic molecular theory,the pressure of a gas in a container will decrease if the

The mixing of different gases by random molecular motion with frequent collisions is called

A 0.286-g sample of gas occupies 125 mL at 60.cm of Hg and 25°C.What is the molar mass of the gas?

In the diagram below,nitrogen molecules are represented by unshaded spheres,oxygen molecules by gray spheres,and chlorine molecules by black spheres. -If the total pressure in the container is 900 mm Hg,what is the partial pressure of oxygen?

What is the pressure in a gas container that is connected to an open-end U-tube manometer if the pressure of the atmosphere is 752 torr and the level of mercury in the arm connected to the container is 8.60 cm higher than the level of mercury open to the atmosphere?

-What is the pressure (in mm Hg)of the gas inside the above apparatus if the outside pressure,Patm,is 745 mm Hg and the difference in mercury levels,Δh,is 25 mm Hg?

An "empty" aerosol can at 25°C still contains gas at 1.00 atmosphere pressure.If an "empty" can is thrown into a 475°C fire,what is the final pressure in the heated can?

Some assumptions from the kinetic molecular theory are listed below.Which one is most frequently cited to explain Charles' law?

According to the kinetic molecular theory of gases,raising the temperature of a gases increases the average kinetic energy and the frequency of ________.

What is the volume of 10.0 g of argon gas at 157°C and 2.50 kPa pressure?

Cyanogen is a gas which contains 46.2% C and 53.8% N by mass.At a temperature of 25°C and a pressure of 750 mm Hg,1.50 g of cyanogen occupies 0.714 L.What is the molecular formula of cyanogen?

Automobile tires are typically inflated to about 30 pounds of pressure per square inch.What is the typical air pressure of a tire in kPa?

Which of the following substances has increased markedly due to the use of fossil fuels and contributes to the greenhouse effect?

The major source of Cl atoms in the stratosphere is from

At STP the number of liters of O2 required to react with 11.2 liters of CH4 to form only CO2 and H2O is ________ liters.

What is the pressure in a gas container that is connected to an open-end U-tube manometer if the pressure of the atmosphere is 742 torr and the level of mercury in the arm connected to the container is 8.60 cm higher than the level of mercury open to the atmosphere?

Which statement about real gases is true?

"Equal volumes of different gases at the same temperature and pressure contain the same molar amounts" is another way of stating

Three bulbs,two of which contain different gases and one of which is empty,are connected as shown in drawing (a).Which drawing (b)- (d)best represents the system after the stopcocks are opened and the system is allowed to come to equilibrium?

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Each of three identical 15.0-L gas cylinders contains 7.50 mol of gas at 295 K.Cylinder A contains Ar,cylinder B contains Cl₂,and cylinder C contains N₂.According to the kinetic molecular theory,which gas has the highest average speed?

-What is the pressure (in mm Hg)of the gas inside the above apparatus if the outside pressure,P_atm,is 745 mm Hg and the difference in mercury levels,Δh,is 25 mm Hg?

At STP the number of liters of O₂ required to react with 11.2 liters of CH₄ to form only CO₂ and H₂O is ________ liters.