Question 1

Which of the following compounds will behave LEAST like an ideal gas at low temperatures?

Accepted Answer

A)   He
B)   SO2
C)   H2
D)   N2
E)   F2F) A) and C)
G) B) and E)

Question 2

Why doesn't Dalton's Law of Partial Pressures depend on the identity of the gases present?

Accepted Answer

It is assumed that all gas particles are...

Question 3

What is the Celsius temperature of 100.0 g of chlorine gas in a 55.0-L container at 800 mm Hg?

Accepted Answer

A)   -23°C
B)   228°C
C)   250°C
D)   500°CE) All of the above
F) C) and D)

Question 4

Define vapor pressure.

Accepted Answer

A)   partial pressure of water in a liquid mixture
B)   partial pressure of water in a gaseous mixture
C)   condensation of water
D)   water dissolved in a liquid
E)   water moleculesF) B) and C)
G) B) and D)

Question 5

Which of the following gases has the highest average speed at 400K?

Accepted Answer

A)   N2
B)   O2  
C)   F2
D)   Cl2E) B) and D)
F) All of the above

Question 6

What is the volume of 9.783 × 1023 atoms of Kr at 9.25 atm and 512K?

Accepted Answer

A)   7.38 L
B)   3.69 L
C)   1.85 L
D)   15.4 L
E)   30.8 LF) D) and E)
G) All of the above

Question 7

A sample of gas initially has a volume of 859 mL at 565 K and 2.20 atm.What pressure will the sample have if the volume changes to 268 mL while the temperature is increased to 815 K?

Accepted Answer

A)   10.2 atm
B)   9.83 atm
C)   15.3 atm
D)   6.53 atm
E)   1.05 atmF) A) and B)
G) A) and C)

Question 8

The volume of a gas is proportional to number of moles of a gas is known as

Accepted Answer

A)   Avogadro's Law.
B)   Ideal Gas Law.
C)   Charles's Law.
D)   Boyle's Law.
E)   Dalton's Law.F) A) and D)
G) A) and E)

Question 9

A mixture of 0.220 moles CO,0.350 moles N2 and 0.640 moles Ne has a total pressure of 2.95 atm.What is the pressure of CO?

Accepted Answer

A)   1.86 atm
B)   0.649 atm
C)   0.536 atm
D)   1.54 atm
E)   0.955 atmF) C) and D)
G) D) and E)

Question 10

What volume of water is produced when 38.5 g of ethanol reacts with oxygen at 500°C at 1.75 atm?
CH3CH2OH(g) + 3 O2(g) → 2 CO2(g) + 3 H2O(g)

Accepted Answer

A)   91.0 L
B)   58.7 L
C)   103 L
D)   30.3 L
E)   12.5 LF) A) and B)
G) C) and E)

Question 11

How many liters of oxygen gas can be produced at STP from the decomposition of 0.250 L of 3.00 M H2O2 in the reaction according to the chemical equation shown below? 2O2 in the reaction according to the chemical equation shown below?   A)  8.41 L B)  11.2 L C)  16.8 L D)  33.6 L" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   8.41 L
B)   11.2 L
C)   16.8 L
D)   33.6 LE) All of the above
F) B) and D)

Question 12

The following reaction is used to generate hydrogen gas in the laboratory.If 243 mL of gas is collected at 25°C and has a total pressure of 745 mm Hg,what mass of hydrogen is produced? A possibly useful table of water vapor pressures is provided below.
Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g) T (°C) P (mm Hg) 
20 17.55
25 23.78
30 31.86

Accepted Answer

A)   0.0196 g H2
B)   0.0717 g H2
C)   0.0190 g H2
D)   0.0144 g H2
E)   0.0449 g H2F) A) and C)
G) B) and E)

Question 13

Which of the following samples has the greatest density at STP?

Accepted Answer

A)   NO2
B)   Xe
C)   SO2
D)   SF6
E)   All of these samples have the same density at STP.F) A) and B)
G) D) and E)

Question 14

A steel bottle contains argon gas at STP.What is the final pressure if the temperature is changed to 145°C?

Accepted Answer

A)   0. 653 atm
B)   0. 713 atm
C)   1. 40 atm
D)   1. 53 atmE) B) and C)
F) A) and D)

Question 15

Consider a container of gas under a particular P,V,T set of conditions.Describe how the pressure would change if the volume were doubled while the absolute temperature was increasing by a factor of two.

Accepted Answer

The pressure would stay constant.The dou...

Question 16

What is the density of hydrogen gas at STP?

Accepted Answer

A)   11.1 g/L
B)   0.0450 g/L
C)   0.0823 g/L
D)   0.0899 g/LE) A) and B)
F) None of the above

Question 17

How many grams of Xe gas are present in a 21.00 L cylinder held at a pressure of 21.00 atm and 67.0°C?

Accepted Answer

A)   2074 g
B)   514.7 g
C)   7361 g
D)   8043 gE) None of the above
F) C) and D)

Question 18

Calculate the root mean square velocity of nitrogen molecules at 25°C.

Accepted Answer

A)   729 m/s
B)   515 m/s
C)   149 m/s
D)   297 m/sE) A) and B)
F) A) and C)

Question 19

A 7.82 L gas cylinder contains 28.6 g of O2 and 79.5 g of Xe at 70°C.What is the pressure exerted by the gas?

Accepted Answer

A)   1.10 atm
B)   8.63 atm
C)   6.92 atm
D)   3.28 atm
E)   5.41 atmF) A) and C)
G) All of the above

Question 20

A cylinder filled with nitrogen gas at 80°C occupies 6.82 L at 12.00 atm.It is then quickly cooled to 5°C,and the pressure is measured at 4.82 atm.What is the new volume of the cylinder?

Accepted Answer

A)   6.42 L
B)   17.3 L
C)   3.38 L
D)   13.4 LE) None of the above
F) B) and C)

Exam 11: Gases

A sample of gas initially has a volume of 859 mL at 565 K and 2.20 atm.What pressure will the sample have if the volume changes to 268 mL while the temperature is increased to 815 K?

Correct Answer
verified

What volume of water is produced when 38.5 g of ethanol reacts with oxygen at 500°C at 1.75 atm? CH₃CH₂OH(g) + 3 O₂(g) → 2 CO₂(g) + 3 H₂O(g)

Correct Answer
verified

A steel bottle contains argon gas at STP.What is the final pressure if the temperature is changed to 145°C?

Correct Answer
verified

Consider a container of gas under a particular P,V,T set of conditions.Describe how the pressure would change if the volume were doubled while the absolute temperature was increasing by a factor of two.

Correct Answer
verified
The pressure would stay constant.The dou...
View Answer

How many grams of Xe gas are present in a 21.00 L cylinder held at a pressure of 21.00 atm and 67.0°C?

Correct Answer
verified

What is the Celsius temperature of 100.0 g of chlorine gas in a 55.0-L container at 800 mm Hg?

Correct Answer
verified

Correct Answer
verified

A cylinder filled with nitrogen gas at 80°C occupies 6.82 L at 12.00 atm.It is then quickly cooled to 5°C,and the pressure is measured at 4.82 atm.What is the new volume of the cylinder?

Correct Answer
verified

What is the volume of 9.783 × 10²³ atoms of Kr at 9.25 atm and 512K?

Correct Answer
verified

A 7.82 L gas cylinder contains 28.6 g of O2 and 79.5 g of Xe at 70°C.What is the pressure exerted by the gas?

Correct Answer
verified

Which of the following gases has the highest average speed at 400K?

Correct Answer
verified

A mixture of 0.220 moles CO,0.350 moles N₂ and 0.640 moles Ne has a total pressure of 2.95 atm.What is the pressure of CO?

Correct Answer
verified

Which of the following samples has the greatest density at STP?

Correct Answer
verified

Which of the following compounds will behave LEAST like an ideal gas at low temperatures?

Correct Answer
verified

Define vapor pressure.

Correct Answer
verified

Why doesn't Dalton's Law of Partial Pressures depend on the identity of the gases present?

Correct Answer
verified
It is assumed that all gas particles are...
View Answer

What is the density of hydrogen gas at STP?

Correct Answer
verified

How many liters of oxygen gas can be produced at STP from the decomposition of 0.250 L of 3.00 M H₂O₂ in the reaction according to the chemical equation shown below?

Correct Answer
verified

Calculate the root mean square velocity of nitrogen molecules at 25°C.

Correct Answer
verified

The volume of a gas is proportional to number of moles of a gas is known as

Correct Answer
verified

Exam 11: Gases

A sample of gas initially has a volume of 859 mL at 565 K and 2.20 atm.What pressure will the sample have if the volume changes to 268 mL while the temperature is increased to 815 K?

Correct AnswerverifiedShow Answer

What volume of water is produced when 38.5 g of ethanol reacts with oxygen at 500°C at 1.75 atm? CH3CH2OH(g) + 3 O2(g) → 2 CO2(g) + 3 H2O(g)

Correct AnswerverifiedShow Answer

A steel bottle contains argon gas at STP.What is the final pressure if the temperature is changed to 145°C?

Correct AnswerverifiedShow Answer

Consider a container of gas under a particular P,V,T set of conditions.Describe how the pressure would change if the volume were doubled while the absolute temperature was increasing by a factor of two.

Correct AnswerverifiedThe pressure would stay constant.The dou...View AnswerShow Answer

How many grams of Xe gas are present in a 21.00 L cylinder held at a pressure of 21.00 atm and 67.0°C?

Correct AnswerverifiedShow Answer

What is the Celsius temperature of 100.0 g of chlorine gas in a 55.0-L container at 800 mm Hg?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A cylinder filled with nitrogen gas at 80°C occupies 6.82 L at 12.00 atm.It is then quickly cooled to 5°C,and the pressure is measured at 4.82 atm.What is the new volume of the cylinder?

Correct AnswerverifiedShow Answer

What is the volume of 9.783 × 1023 atoms of Kr at 9.25 atm and 512K?

Correct AnswerverifiedShow Answer

A 7.82 L gas cylinder contains 28.6 g of O2 and 79.5 g of Xe at 70°C.What is the pressure exerted by the gas?

Correct AnswerverifiedShow Answer

Which of the following gases has the highest average speed at 400K?

Correct AnswerverifiedShow Answer

A mixture of 0.220 moles CO,0.350 moles N2 and 0.640 moles Ne has a total pressure of 2.95 atm.What is the pressure of CO?

Correct AnswerverifiedShow Answer

Which of the following samples has the greatest density at STP?

Correct AnswerverifiedShow Answer

Which of the following compounds will behave LEAST like an ideal gas at low temperatures?

Correct AnswerverifiedShow Answer

Define vapor pressure.

Correct AnswerverifiedShow Answer

Why doesn't Dalton's Law of Partial Pressures depend on the identity of the gases present?

Correct AnswerverifiedIt is assumed that all gas particles are...View AnswerShow Answer

What is the density of hydrogen gas at STP?

Correct AnswerverifiedShow Answer

How many liters of oxygen gas can be produced at STP from the decomposition of 0.250 L of 3.00 M H2O2 in the reaction according to the chemical equation shown below?

Correct AnswerverifiedShow Answer

Calculate the root mean square velocity of nitrogen molecules at 25°C.

Correct AnswerverifiedShow Answer

The volume of a gas is proportional to number of moles of a gas is known as

Correct AnswerverifiedShow Answer

Correct Answer
verified

What volume of water is produced when 38.5 g of ethanol reacts with oxygen at 500°C at 1.75 atm? CH₃CH₂OH(g) + 3 O₂(g) → 2 CO₂(g) + 3 H₂O(g)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The pressure would stay constant.The dou...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What is the volume of 9.783 × 10²³ atoms of Kr at 9.25 atm and 512K?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

A mixture of 0.220 moles CO,0.350 moles N₂ and 0.640 moles Ne has a total pressure of 2.95 atm.What is the pressure of CO?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
It is assumed that all gas particles are...
View Answer

Correct Answer
verified

How many liters of oxygen gas can be produced at STP from the decomposition of 0.250 L of 3.00 M H₂O₂ in the reaction according to the chemical equation shown below?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified