Question 1

Consider the following van der Waals coefficients:  Which of the following gases has the largest attractive forces?

Accepted Answer

A)  Neon
B)  Ammonia
C)  Chlorine
D)  Water
E)  HeliumF) All of the above
G) C) and D)

Question 2

The pressure at 20,000 feet above sea level is about 400.mmHg.This corresponds to

Accepted Answer

A)  526 Pa
B)  53.3 kg.m-1.s-2 
C)  0.526 Torr
D)  0.526 kPa
E)  53.3 kPaF) B) and D)
G) B) and E)

Question 3

Sulfur dioxide reacts with oxygen gas to produce sulfur trioxide.What volume of oxygen gas will react with 15.0 L of sulfur dioxide if both gases are at 101.3 kPa and 125 ∘\circ∘ C?

Accepted Answer

A)  30.0 L
B)  15.0 L
C)  7.50 L
D)  5.00 L
E)  3.75 L F) B) and E)
G) None of the above

Question 4

Consider the following statements:
1.Real gases act more like ideal gases as the temperature increases.
2.When n and T are constant, a decrease in P results in a decrease in V.
3.At 1 atm and 273 K, every molecule in a sample of a gas has the same speed.
4.At constant T, CO2 molecules at 1 atm and H2 molecules at 5 atm have the same 
average kinetic energy.
Which of these statements is true?

Accepted Answer

A)  2 and 3
B)  1 and 2
C)  1 and 4
D)  3 and 4
E)  2 and 4F) A) and B)
G) B) and C)

Question 5

If 250.0 mL of a gas at STP weighs 2.00 g,what is the molar mass of the gas?

Accepted Answer

A)  28.0 g.mol-1 
B)  179 g.mol-1 
C)  8.00 g.mol-1 
D)  56.0 g.mol-1 
E)  44.8 g.mol-1 F) B) and C)
G) All of the above

Question 6

What is the density of helium gas at 750 kPa and 25 ∘\circ∘ C?

Accepted Answer

A)  2.42 g.L-1 
B)  1.21 g.L-1 
C)  0.605 g.L-1 
D)  0.161 g.L-1 
E)  0.0120 g.L-1  F) A) and B)
G) C) and D)

Question 7

What is the pressure of 800.g of nitrogen gas at 25.00°C at a volume of 5.0 L?

Accepted Answer

A)  2.35 Torr
B)  11.7 Torr
C)  391.4 Torr
D)  140 Torr
E)  699 TorrF) B) and D)
G) A) and E)

Question 8

The density of citronellal,a mosquito repellant,is 1.45 g.L-1 at 365 ∘\circ∘ 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  F) A) and C)
G) None of the above

Question 9

If the average speed of a carbon dioxide molecule is 410 m.s-1  at 25 ∘\circ∘ C,what is the average speed of a molecule of methane at the same temperature?

Accepted Answer

A)  680 m.s-1 
B)  410 m.s-1 
C)  1130 m.s-1 
D)  1000 m.s-1 
E)  247 m.s-1  F) B) and E)
G) C) and D)

Question 10

Lithium metal reacts with nitrogen gas to produce lithium nitride.What volume of nitrogen gas at 2.00 atm and 175 ∘\circ∘ C is required to produce 75.0 g of lithium nitride?

Accepted Answer

A)  30.9 L
B)  119 L
C)  79.2 L
D)  39.6 L
E)  15.5 L F) A) and E)
G) None of the above

Question 11

How many liters of hydrogen gas measured at 25.0 ∘\circ∘ C and 745 Torr are produced by detonation of 59.0 g of TNT,trinitrotoluene,C7H5(NO2) 3?

Accepted Answer

A)  0.544 L
B)  6.94 L
C)  1.36 L
D)  16.2 L E) B) and C)
F) A) and D)

Question 12

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 PaF) A) and B)
G) B) and C)

Question 13

A 0.479-g sample of nitrogen,oxygen or neon gas occupies a volume of 265 mL at 157 l Pa and 20.0 ∘\circ∘ C.What are the molar mass and identity of the gas?

Accepted Answer

A)  14.0 g.mol-1,N
B)  32.0 g.mol-1,O2 
C)  20.1 g.mol-1,Ne
D)  16.0 g.mol-1,O
E)  28.0 g.mol-1,N2  F) None of the above
G) All of the above

Question 14

The number of molecules in 44.8 L of nitrogen at exactly 0 ∘\circ∘ C and 3.00 atm is

Accepted Answer

A)  1.20 * 1024 
B)  3.61 * 1024 
C)  3.61 * 10-23 
D)  2.01 * 1023 
E)  18.0 * 10-23  F) A) and B)
G) B) and C)

Question 15

How many liters of nitrogen gas measured at 25.0 ∘\circ∘ C and 745 Torr are produced by detonation of 90.8 g of TNT,trinitrotoluene,C7H5(NO2) 3?

Accepted Answer

A)  0.839 L
B)  1.26 L
C)  9.98 L
D)  15.0 L E) C) and D)
F) B) and D)

Question 16

What is the root mean square speed of carbon dioxide molecules at 98 ∘\circ∘ C?

Accepted Answer

A)  153 m.s-1 
B)  459 m.s-1 
C)  45.6 m.s-1 
D)  574 m.s-1 
E)  236 m.s-1  F) A) and B)
G) A) and C)

Question 17

Consider two cylinders of gas,both with a volume of 25 L and at 1 atm and 25S1U1P1$\circ$S1S1P0C.If one cylinder contains nitrogen gas and the other argon,which of the following statements are true and which are false.
(a)The temperature of the gases is different.
(b)The average molecular speed of the gases is the same.
(c)The average kinetic energy of the gases is the same.

Accepted Answer

(a)False
(...

Question 18

Which molecules of the following gases will have the greatest average kinetic energy?

Accepted Answer

A)  CO2 at 1 atm and 298 K
B)  N2 at 1 atm and 298 K
C)  All the molecules have the same kinetic energy.
D)  He at 0.1 atm and 298 K
E)  H2 at 0.5 atm and 298 KF) B) and D)
G) A) and B)

Question 19

Which of the following gases will have the largest root mean square speed at 100 ∘\circ∘ C?

Accepted Answer

A)  water
B)  argon
C)  methane
D)  nitrogen
E)  oxygen F) B) and D)
G) B) and C)

Question 20

A 1.00-L sample of C2H4(g) at 2.00 atm and 293 K is burned in 8.00 L of oxygen gas at the same temperature and pressure to form carbon dioxide and water.If the reaction goes to completion,what is the final volume of all gases at 2.00 atm and 293 K?

Accepted Answer

A)  5.33 L
B)  9.00 L
C)  8.00 L
D)  3.00 L
E)  5.00 LF) A) and C)
G) A) and B)

Exam 5: The Properties of Gases

The pressure at 20,000 feet above sea level is about 400.mmHg.This corresponds to

Correct Answer
verified

How many liters of nitrogen gas measured at 25.0^$\circ$C and 745 Torr are produced by detonation of 90.8 g of TNT,trinitrotoluene,C₇H₅(NO₂) ₃?

Correct Answer
verified

What is the pressure of 800.g of nitrogen gas at 25.00°C at a volume of 5.0 L?

Correct Answer
verified

Correct Answer
verified

How many liters of hydrogen gas measured at 25.0^$\circ$C and 745 Torr are produced by detonation of 59.0 g of TNT,trinitrotoluene,C₇H₅(NO₂) ₃?

Correct Answer
verified

The number of molecules in 44.8 L of nitrogen at exactly 0^$\circ$C and 3.00 atm is

Correct Answer
verified

Which of the following gases will have the largest root mean square speed at 100^$\circ$C?

Correct Answer
verified

The density of citronellal,a mosquito repellant,is 1.45 g.L^-¹ at 365^$\circ$C and 50.0 kPa.What is the molar mass of citronellal?

Correct Answer
verified

Sulfur dioxide reacts with oxygen gas to produce sulfur trioxide.What volume of oxygen gas will react with 15.0 L of sulfur dioxide if both gases are at 101.3 kPa and 125^$\circ$C?

Correct Answer
verified

What is the density of helium gas at 750 kPa and 25^$\circ$C?

Correct Answer
verified

If the average speed of a carbon dioxide molecule is 410 m.s^-1 at 25^$\circ$C,what is the average speed of a molecule of methane at the same temperature?

Correct Answer
verified

A 1.00-L sample of C₂H₄(g) at 2.00 atm and 293 K is burned in 8.00 L of oxygen gas at the same temperature and pressure to form carbon dioxide and water.If the reaction goes to completion,what is the final volume of all gases at 2.00 atm and 293 K?

Correct Answer
verified

What is the root mean square speed of carbon dioxide molecules at 98^$\circ$C?

Correct Answer
verified

A pressure of 2.50 * 10⁵ kg.m^-¹.s^-² corresponds to

Correct Answer
verified

A 0.479-g sample of nitrogen,oxygen or neon gas occupies a volume of 265 mL at 157 l Pa and 20.0^$\circ$C.What are the molar mass and identity of the gas?

Correct Answer
verified

Consider the following van der Waals coefficients: Which of the following gases has the largest attractive forces?

Correct Answer
verified

Which molecules of the following gases will have the greatest average kinetic energy?

Correct Answer
verified

Correct Answer
verified
(a)False
(...
View Answer

Lithium metal reacts with nitrogen gas to produce lithium nitride.What volume of nitrogen gas at 2.00 atm and 175^$\circ$C is required to produce 75.0 g of lithium nitride?

Correct Answer
verified

If 250.0 mL of a gas at STP weighs 2.00 g,what is the molar mass of the gas?

Correct Answer
verified

Exam 5: The Properties of Gases

The pressure at 20,000 feet above sea level is about 400.mmHg.This corresponds to

Correct AnswerverifiedShow Answer

How many liters of nitrogen gas measured at 25.0 ∘\circ∘ C and 745 Torr are produced by detonation of 90.8 g of TNT,trinitrotoluene,C7H5(NO2) 3?

Correct AnswerverifiedShow Answer

What is the pressure of 800.g of nitrogen gas at 25.00°C at a volume of 5.0 L?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

How many liters of hydrogen gas measured at 25.0 ∘\circ∘ C and 745 Torr are produced by detonation of 59.0 g of TNT,trinitrotoluene,C7H5(NO2) 3?

Correct AnswerverifiedShow Answer

The number of molecules in 44.8 L of nitrogen at exactly 0 ∘\circ∘ C and 3.00 atm is

Correct AnswerverifiedShow Answer

Which of the following gases will have the largest root mean square speed at 100 ∘\circ∘ C?

Correct AnswerverifiedShow Answer

The density of citronellal,a mosquito repellant,is 1.45 g.L-1 at 365 ∘\circ∘ C and 50.0 kPa.What is the molar mass of citronellal?

Correct AnswerverifiedShow Answer

Sulfur dioxide reacts with oxygen gas to produce sulfur trioxide.What volume of oxygen gas will react with 15.0 L of sulfur dioxide if both gases are at 101.3 kPa and 125 ∘\circ∘ C?

Correct AnswerverifiedShow Answer

What is the density of helium gas at 750 kPa and 25 ∘\circ∘ C?

Correct AnswerverifiedShow Answer

If the average speed of a carbon dioxide molecule is 410 m.s-1 at 25 ∘\circ∘ C,what is the average speed of a molecule of methane at the same temperature?

Correct AnswerverifiedShow Answer

A 1.00-L sample of C2H4(g) at 2.00 atm and 293 K is burned in 8.00 L of oxygen gas at the same temperature and pressure to form carbon dioxide and water.If the reaction goes to completion,what is the final volume of all gases at 2.00 atm and 293 K?

Correct AnswerverifiedShow Answer

What is the root mean square speed of carbon dioxide molecules at 98 ∘\circ∘ C?

Correct AnswerverifiedShow Answer

A pressure of 2.50 * 105 kg.m-1.s-2 corresponds to

Correct AnswerverifiedShow Answer

A 0.479-g sample of nitrogen,oxygen or neon gas occupies a volume of 265 mL at 157 l Pa and 20.0 ∘\circ∘ C.What are the molar mass and identity of the gas?

Correct AnswerverifiedShow Answer

Consider the following van der Waals coefficients: Which of the following gases has the largest attractive forces?

Correct AnswerverifiedShow Answer

Which molecules of the following gases will have the greatest average kinetic energy?

Correct AnswerverifiedShow Answer

Correct Answerverified(a)False(...View AnswerShow Answer

Lithium metal reacts with nitrogen gas to produce lithium nitride.What volume of nitrogen gas at 2.00 atm and 175 ∘\circ∘ C is required to produce 75.0 g of lithium nitride?

Correct AnswerverifiedShow Answer

If 250.0 mL of a gas at STP weighs 2.00 g,what is the molar mass of the gas?

Correct AnswerverifiedShow Answer

Correct Answer
verified

How many liters of nitrogen gas measured at 25.0^$\circ$C and 745 Torr are produced by detonation of 90.8 g of TNT,trinitrotoluene,C₇H₅(NO₂) ₃?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

How many liters of hydrogen gas measured at 25.0^$\circ$C and 745 Torr are produced by detonation of 59.0 g of TNT,trinitrotoluene,C₇H₅(NO₂) ₃?

Correct Answer
verified

The number of molecules in 44.8 L of nitrogen at exactly 0^$\circ$C and 3.00 atm is

Correct Answer
verified

Which of the following gases will have the largest root mean square speed at 100^$\circ$C?

Correct Answer
verified

The density of citronellal,a mosquito repellant,is 1.45 g.L^-¹ at 365^$\circ$C and 50.0 kPa.What is the molar mass of citronellal?

Correct Answer
verified

Sulfur dioxide reacts with oxygen gas to produce sulfur trioxide.What volume of oxygen gas will react with 15.0 L of sulfur dioxide if both gases are at 101.3 kPa and 125^$\circ$C?

Correct Answer
verified

What is the density of helium gas at 750 kPa and 25^$\circ$C?

Correct Answer
verified

If the average speed of a carbon dioxide molecule is 410 m.s^-1 at 25^$\circ$C,what is the average speed of a molecule of methane at the same temperature?

Correct Answer
verified

A 1.00-L sample of C₂H₄(g) at 2.00 atm and 293 K is burned in 8.00 L of oxygen gas at the same temperature and pressure to form carbon dioxide and water.If the reaction goes to completion,what is the final volume of all gases at 2.00 atm and 293 K?

Correct Answer
verified

What is the root mean square speed of carbon dioxide molecules at 98^$\circ$C?

Correct Answer
verified

A pressure of 2.50 * 10⁵ kg.m^-¹.s^-² corresponds to

Correct Answer
verified

A 0.479-g sample of nitrogen,oxygen or neon gas occupies a volume of 265 mL at 157 l Pa and 20.0^$\circ$C.What are the molar mass and identity of the gas?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
(a)False
(...
View Answer

Lithium metal reacts with nitrogen gas to produce lithium nitride.What volume of nitrogen gas at 2.00 atm and 175^$\circ$C is required to produce 75.0 g of lithium nitride?

Correct Answer
verified

Correct Answer
verified