Question 1

What is the molar volume of a nitrogen gas at -27.0oC and 1 atm?

Accepted Answer

A)  2.22 L
B)  22.4 L
C)  24.6 L
D)  20.2 LE) None of the above
F) A) and B)

Question 2

What is the density of nitrogen gas at 740 Torr and -12 ∘\circ∘ C?

Accepted Answer

A)  0.637 g.L-1 
B)  1.17 g.L-1 
C)  1.27 g.L-1 
D)  2.55 g.L-1 
E)  9.56 g.L-1  F) A) and D)
G) C) and E)

Question 3

The following experiment was carried out using a newly synthesized chlorofluorocarbon.Exactly 50 mL of the gas effused through a porous barrier in 157 s.The same volume of argon effused in 76 s under the same conditions.Which compound is the chlorofluorocarbon?

Accepted Answer

A)  C2Cl4F2 
B)  C2ClF5 
C)  C2Cl2F4 
D)  C2Cl5F
E)  C2Cl3F3 F) B) and D)
G) A) and B)

Question 4

An oxygen tank kept at 20 ∘\circ∘ C contains 28.0 moles of oxygen and the gauge reads 31.0 atm.After two weeks,the gauge reads 10.5 atm.How many moles of oxygen were used during the two-week period?

Accepted Answer

A)  9.25 moles
B)  7.5 moles
C)  20.5 moles
D)  18.5 moles
E)  9.48 moles F) A) and D)
G) A) and C)

Question 5

At 80.0 ∘\circ∘ C and 12.0 Torr,the density of camphor vapor is 0.0829 g.L-1 .What is the molar mass of camphor?

Accepted Answer

A)  243 g.mol-1 
B)  34.5 g.mol-1 
C)  152 g.mol-1 
D)  3490 g.mol-1 
E)  20.3 g.mol-1  F) D) and E)
G) A) and D)

Question 6

The root mean square speed of nitrogen molecules in air at 20S1U1P1$\circ$S1S1P0C 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

The answer of The root mean square speed of nitrogen...

Question 7

The density of the vapor of allicin,a component of garlic,is 1.14 g.L-1 at 125 ∘\circ∘ 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  F) All of the above
G) B) and E)

Question 8

All of the following elements are gases at room temperature and atmospheric pressure except

Accepted Answer

A)  Rn
B)  F
C)  Br
D)  N
E)  ClF) None of the above
G) A) and E)

Question 9

A 6.00-L sample of C2H4(g) at 2.00 atm and 293 K is burned in 6.00 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)  2.66 L
B)  6.00 L
C)  2.00 L
D)  1.33 L
E)  4.00 LF) B) and E)
G) B) and D)

Question 10

Calculate the pressure of 4.00 g of nitrogen gas in a 1.00-L container at 20.0 ∘\circ∘ C.

Accepted Answer

A)  0.469 atm
B)  6.87 atm
C)  96.2 atm
D)  0.235 atm
E)  3.44 atm F) B) and D)
G) D) and E)

Question 11

If it takes 15 s for a certain sample of neon to effuse through a porous barrier,it will take ________________________________ (15 s,greater than 15 s,less than 15 s)for the same amount of nitrogen gas to effuse through the barrier under the same conditions.

Accepted Answer

The answer of If it takes 15 s for a...

Question 12

How many liters of carbon dioxide measured at 25.0 ∘\circ∘ C and 821 Torr would be produced by the combustion of 319 g of glucose,C6H12O6?

Accepted Answer

A)  3.37 L
B)  40.1 L
C)  241 L
D)  20.2 L E) B) and C)
F) C) and D)

Question 13

What volume is occupied by 50.0 g of chlorine gas at 10.00°C at a pressure of 755 Torr?

Accepted Answer

A)  1.53 L
B)  8.2 L
C)  16.4 L
D)  0.64 L
E)  181 LF) C) and D)
G) C) and E)

Question 14

A sample of nitrogen gas collected at 24S1U1P1$\circ$S1S1P0C and 745 Torr has a vapor pressure of 745 Torr.True or false?

Accepted Answer

A) True 
 B)False

Question 15

What mass of aluminum metal is required to produce 12.5 L of hydrogen gas at exactly 25 ∘\circ∘ C and 1.00 atm? 
2Al(s) + 6H+(aq)  →\rightarrow→  2Al3+(aq) + 3H2(g)

Accepted Answer

A)  20.7 g
B)  22.6 g
C)  10.0 g
D)  13.8 g
E)  9.19 g F) B) and E)
G) A) and D)

Question 16

A badly tuned automobile engine can release about 50 moles of carbon dioxide per hour.At 35 ∘\circ∘ C,what volume of carbon dioxide is released in a six-hour period if the atmospheric pressure is 740 Torr?

Accepted Answer

A)  7.9 * 105 L
B)  7.8 * 103 L
C)  1.3 * 103 L
D)  10 L
E)  1.3 * 105 L F) A) and E)
G) B) and E)

Question 17

What mass of aluminum metal is required to produce 4.48 L of hydrogen gas at exactly 0 ∘\circ∘ C and 5.00 atm by reaction of the metal with excess strong acid?

Accepted Answer

A)  1.80 g
B)  9.00 g
C)  36.0 g
D)  18.0 g
E)  180 g F) A) and D)
G) A) and C)

Question 18

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

Accepted Answer

A)  50.2 Torr
B)  103 Torr
C)  0.0661 Torr
D)  0.103 Torr E) None of the above
F) B) and C)

Question 19

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

Accepted Answer

A)  5.30 g.L-1 
B)  0.392 g.L-1 
C)  39.7 g.L-1 
D)  79.5 g.L-1 
E)  19.9 g.L-1  F) A) and B)
G) A) and D)

Question 20

Which of the following gases effuses slowest?

Accepted Answer

A)  Fluorine
B)  Carbon dioxide
C)  Chlorine
D)  Carbon monoxide
E)  NitrogenF) A) and B)
G) A) and C)

Exam 5: The Properties of Gases

A 6.00-L sample of C2H4(g) at 2.00 atm and 293 K is burned in 6.00 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

The density of the vapor of allicin,a component of garlic,is 1.14 g.L-1 at 125 ∘\circ∘ C and 175 Torr.What is the molar mass of allicin?

Correct AnswerverifiedShow Answer

A sample of nitrogen gas collected at 24 ∘\circ∘ C and 745 Torr has a vapor pressure of 745 Torr.True or false?

Correct AnswerverifiedShow Answer

If it takes 15 s for a certain sample of neon to effuse through a porous barrier,it will take ________________________________ (15 s,greater than 15 s,less than 15 s)for the same amount of nitrogen gas to effuse through the barrier under the same conditions.

Correct AnswerverifiedShow Answer

All of the following elements are gases at room temperature and atmospheric pressure except

Correct AnswerverifiedShow Answer

The root mean square speed of nitrogen molecules in air at 20 ∘\circ∘ 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 AnswerverifiedShow Answer

How many liters of carbon dioxide measured at 25.0 ∘\circ∘ C and 821 Torr would be produced by the combustion of 319 g of glucose,C6H12O6?

Correct AnswerverifiedShow Answer

The following experiment was carried out using a newly synthesized chlorofluorocarbon.Exactly 50 mL of the gas effused through a porous barrier in 157 s.The same volume of argon effused in 76 s under the same conditions.Which compound is the chlorofluorocarbon?

Correct AnswerverifiedShow Answer

What is the density of nitrogen gas at 740 Torr and -12 ∘\circ∘ C?

Correct AnswerverifiedShow Answer

A badly tuned automobile engine can release about 50 moles of carbon dioxide per hour.At 35 ∘\circ∘ C,what volume of carbon dioxide is released in a six-hour period if the atmospheric pressure is 740 Torr?

Correct AnswerverifiedShow Answer

What volume is occupied by 50.0 g of chlorine gas at 10.00°C at a pressure of 755 Torr?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What mass of aluminum metal is required to produce 4.48 L of hydrogen gas at exactly 0 ∘\circ∘ C and 5.00 atm by reaction of the metal with excess strong acid?

Correct AnswerverifiedShow Answer

What is the molar volume of a nitrogen gas at -27.0oC and 1 atm?

Correct AnswerverifiedShow Answer

What mass of aluminum metal is required to produce 12.5 L of hydrogen gas at exactly 25 ∘\circ∘ C and 1.00 atm? 2Al(s) + 6H+(aq) →\rightarrow→ 2Al3+(aq) + 3H2(g)

Correct AnswerverifiedShow Answer

Calculate the pressure of 4.00 g of nitrogen gas in a 1.00-L container at 20.0 ∘\circ∘ C.

Correct AnswerverifiedShow Answer

An oxygen tank kept at 20 ∘\circ∘ C contains 28.0 moles of oxygen and the gauge reads 31.0 atm.After two weeks,the gauge reads 10.5 atm.How many moles of oxygen were used during the two-week period?

Correct AnswerverifiedShow Answer

At 80.0 ∘\circ∘ C and 12.0 Torr,the density of camphor vapor is 0.0829 g.L-1 .What is the molar mass of camphor?

Correct AnswerverifiedShow Answer

Which of the following gases effuses slowest?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A 6.00-L sample of C₂H₄(g) at 2.00 atm and 293 K is burned in 6.00 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
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The density of the vapor of allicin,a component of garlic,is 1.14 g.L^-¹at 125^$\circ$C and 175 Torr.What is the molar mass of allicin?

Correct Answer
verified

A sample of nitrogen gas collected at 24^$\circ$C and 745 Torr has a vapor pressure of 745 Torr.True or false?

Correct Answer
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Correct Answer
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Correct Answer
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The root mean square speed of nitrogen molecules in air at 20^$\circ$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

How many liters of carbon dioxide measured at 25.0^$\circ$C and 821 Torr would be produced by the combustion of 319 g of glucose,C₆H₁₂O₆?

Correct Answer
verified

Correct Answer
verified

What is the density of nitrogen gas at 740 Torr and -12^$\circ$C?

Correct Answer
verified

A badly tuned automobile engine can release about 50 moles of carbon dioxide per hour.At 35^$\circ$C,what volume of carbon dioxide is released in a six-hour period if the atmospheric pressure is 740 Torr?

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

What mass of aluminum metal is required to produce 4.48 L of hydrogen gas at exactly 0^$\circ$C and 5.00 atm by reaction of the metal with excess strong acid?

Correct Answer
verified

What is the molar volume of a nitrogen gas at -27.0^oC and 1 atm?

Correct Answer
verified

What mass of aluminum metal is required to produce 12.5 L of hydrogen gas at exactly 25^$\circ$C and 1.00 atm? 2Al(s) + 6H⁺(aq) $\rightarrow$ 2Al³⁺(aq) + 3H₂(g)

Correct Answer
verified

Calculate the pressure of 4.00 g of nitrogen gas in a 1.00-L container at 20.0^$\circ$C.

Correct Answer
verified

An oxygen tank kept at 20^$\circ$C contains 28.0 moles of oxygen and the gauge reads 31.0 atm.After two weeks,the gauge reads 10.5 atm.How many moles of oxygen were used during the two-week period?

Correct Answer
verified

At 80.0^$\circ$C and 12.0 Torr,the density of camphor vapor is 0.0829 g.L^-¹.What is the molar mass of camphor?

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified