Question 1

A sample of 0.300 moles of nitrogen occupies 0.600 L.Under the same conditions,what amount of moles occupies 1.200 L?

Accepted Answer

A) 0.600 moles 
B) 1.50 moles 
C) 0.33 moles 
D) 6.00 moles 
A) 0.600 moles 
B) 1.50 moles 
C) 0.33 moles 
D) 6.00 moles A

Question 2

Place the following gases in order of increasing density at STP.
N2 NH3 N2O4 Ar

Accepted Answer

A) N2O4 2 3 
B) Ar 2O4 2 3 
C) N2 2O4 3 
D) NH3 2 2O4 
E) Ar 2 3 2O4 
A) N2O4 2 3 
B) Ar 2O4 2 3 
C) N2 2O4 3 
D) NH3 2 2O4 
E) Ar 2 3 2O4 D

Question 3

When 14.0 g of zinc metal reacts with excess HCl,how many liters of H2 gas are produced at STP?

Accepted Answer

A) 0.208 L 
B) 0.416 L 
C) 4.80 L 
D) 9.60 L 
A) 0.208 L 
B) 0.416 L 
C) 4.80 L 
D) 9.60 L C

Question 4

The volume of a gas is proportional to the temperature of a gas is known as

Accepted Answer

A) Avogadro's Law. 
B) Ideal Gas Law. 
C) Charles's Law. 
D) Boyle's Law. 
A) Avogadro's Law. 
B) Ideal Gas Law. 
C) Charles's Law. 
D) Boyle's Law.

Question 5

Match the following.
-Ideal Gas Law

Accepted Answer

A) PV = nRT 
B) V1/n1 = V2/n2 
C) PT = PA + PB + PC ... 
D) P1V1 = P2V2 
E) V1/T1 = V2/T2 
A) PV = nRT 
B) V1/n1 = V2/n2 
C) PT = PA + PB + PC ... 
D) P1V1 = P2V2 
E) V1/T1 = V2/T2

Question 6

The density of nitric oxide (NO)gas at 1.21 atm and 54.1°C is ________ g/L.

Accepted Answer

A) 0.0451 
B) 0.740 
C) 1.35 
D) 0.273 
E) 8.2 
A) 0.0451 
B) 0.740 
C) 1.35 
D) 0.273 
E) 8.2

Question 7

Match the following.
-Charles's Law

Accepted Answer

A) PV = nRT 
B) V1/n1 = V2/n2 
C) PT = PA + PB + PC ... 
D) P1V1 = P2V2 
E) V1/T1 = V2/T2 
A) PV = nRT 
B) V1/n1 = V2/n2 
C) PT = PA + PB + PC ... 
D) P1V1 = P2V2 
E) V1/T1 = V2/T2

Question 8

A mixture of 10.0 g of Ne and 10.0 g Ar has a total pressure of 1.6 atm.What is the partial pressure of Ne?

Accepted Answer

A) 1.1 atm 
B) 0.80 atm 
C) 0.54 atm 
D) 0.40 atm 
E) 1.3 atm 
A) 1.1 atm 
B) 0.80 atm 
C) 0.54 atm 
D) 0.40 atm 
E) 1.3 atm

Question 9

A gas occupies 22.4 L at STP and 19.0 L at 100°C and 1.50 atm pressure.How many moles of gas did the system gain or lose?

Accepted Answer

A) 0.08 moles gained 
B) 0.01 moles gained 
C) 0.01 moles lost 
D) 0.07 moles lost 
A) 0.08 moles gained 
B) 0.01 moles gained 
C) 0.01 moles lost 
D) 0.07 moles lost

Question 10

The density of a gas is 1.43 g/mole at STP.What is the gas?

Accepted Answer

A) Cl2 
B) S 
C) O2 
D) Ne 
A) Cl2 
B) S 
C) O2 
D) Ne

Question 11

If NO and NH3 are allowed to effuse through a porous membrane under identical conditions,the rate of effusion for NH3 will be ________ times that of NO.

Accepted Answer

A) 0.57 
B) 0.75 
C) 1.3 
D) 1.8 
A) 0.57 
B) 0.75 
C) 1.3 
D) 1.8

Question 12

Match the following.
-Boyle's Law

Accepted Answer

A) PV = nRT 
B) V1/n1 = V2/n2 
C) PT = PA + PB + PC ... 
D) P1V1 = P2V2 
E) V1/T1 = V2/T2 
A) PV = nRT 
B) V1/n1 = V2/n2 
C) PT = PA + PB + PC ... 
D) P1V1 = P2V2 
E) V1/T1 = V2/T2

Question 13

A mixture of He,Ne and Ar has a pressure of 7.85 atm.If the Ne has a mole fraction of 0.47 and Ar has a mole fraction of 0.23,what is the pressure of He?

Accepted Answer

A) 4.2 atm 
B) 3.7 atm 
C) 1.8 atm 
D) 5.5 atm 
E) 2.4 atm 
A) 4.2 atm 
B) 3.7 atm 
C) 1.8 atm 
D) 5.5 atm 
E) 2.4 atm

Question 14

The reason why a hot air balloon goes up in the air is that

Accepted Answer

A) the number of air molecules inside the balloon increases. 
B) the pressure inside the balloon increases. 
C) the hot air inside the balloon is less dense. 
D) All of the above 
A) the number of air molecules inside the balloon increases. 
B) the pressure inside the balloon increases. 
C) the hot air inside the balloon is less dense. 
D) All of the above

Question 15

Match the following.
-Avogadro's Law

Accepted Answer

A) PV = nRT 
B) V1/n1 = V2/n2 
C) PT = PA + PB + PC ... 
D) P1V1 = P2V2 
E) V1/T1 = V2/T2 
A) PV = nRT 
B) V1/n1 = V2/n2 
C) PT = PA + PB + PC ... 
D) P1V1 = P2V2 
E) V1/T1 = V2/T2

Question 16

The action of some commercial drain cleaners is based on the following reaction:
2 NaOH(s)+ 2 Al(s)+ 6 H2O(l)→ 2 NaAl(OH)4(s)+ 3 H2(g)
What is the volume of H2 gas formed at STP when 6.32 g of Al reacts with excess NaOH?

Accepted Answer

A) 3.50 L 
B) 5.25 L 
C) 7.87 L 
D) 8.59 L 
A) 3.50 L 
B) 5.25 L 
C) 7.87 L 
D) 8.59 L

Question 17

The density of chlorine gas at 1.21 atm and 34.9°C is ________ g/L.

Accepted Answer

A) 0.0479 
B) 0.295 
C) 0.423 
D) 1.70 
E) 3.39 
A) 0.0479 
B) 0.295 
C) 0.423 
D) 1.70 
E) 3.39

Question 18

The mole fraction of carbon dioxide in dry air near sea level is 0.000375,where the molar mass of carbon dioxide is 44.010.The partial pressure of carbon dioxide when the total atmospheric pressure (dry air)is 97.5 kPa is ________ kPa.

Accepted Answer

A) 2.63 × 10 5 
B) 5.97 × 103 
C) 0.0370 
D) 1.63 
E) 8.40 × 10-4 
A) 2.63 × 10 5 
B) 5.97 × 103 
C) 0.0370 
D) 1.63 
E) 8.40 × 10-4

Question 19

Rank the following in order of decreasing rate of effusion.
F2 SF6 CO Kr

Accepted Answer

A) SF6 > Kr > F2 > CO 
B) Kr > CO > SF6 > F2 
C) F2 > Kr > CO > SF6 
D) CO > F2 > Kr > SF6 
E) CO > F2 > SF6 > Kr 
A) SF6 > Kr > F2 > CO 
B) Kr > CO > SF6 > F2 
C) F2 > Kr > CO > SF6 
D) CO > F2 > Kr > SF6 
E) CO > F2 > SF6 > Kr

Question 20

The concentration of ozone in a sample of air that has a partial pressure of O3 of 0.33 torr and a total pressure of air of 735 torr is ________ ppm.

Accepted Answer

A) 4.5 × 102 
B) 0.45 
C) 0.045 
D) 2.2 × 10-3 
E) 2.2 
A) 4.5 × 102 
B) 0.45 
C) 0.045 
D) 2.2 × 10-3 
E) 2.2

A sample of 0.300 moles of nitrogen occupies 0.600 L.Under the same conditions,what amount of moles occupies 1.200 L?

Place the following gases in order of increasing density at STP. N₂ NH₃ N₂O₄ Ar

When 14.0 g of zinc metal reacts with excess HCl,how many liters of H₂ gas are produced at STP?

The volume of a gas is proportional to the temperature of a gas is known as

Match the following. -Ideal Gas Law

The density of nitric oxide (NO)gas at 1.21 atm and 54.1°C is ________ g/L.

Match the following. -Charles's Law

A mixture of 10.0 g of Ne and 10.0 g Ar has a total pressure of 1.6 atm.What is the partial pressure of Ne?

A gas occupies 22.4 L at STP and 19.0 L at 100°C and 1.50 atm pressure.How many moles of gas did the system gain or lose?

The density of a gas is 1.43 g/mole at STP.What is the gas?

If NOand NH₃ are allowed to effuse through a porous membrane under identical conditions,the rate of effusion for NH₃ will be ________ times that of NO.

Match the following. -Boyle's Law

A mixture of He,Ne and Ar has a pressure of 7.85 atm.If the Ne has a mole fraction of 0.47 and Ar has a mole fraction of 0.23,what is the pressure of He?

The reason why a hot air balloon goes up in the air is that

Match the following. -Avogadro's Law

The action of some commercial drain cleaners is based on the following reaction: 2 NaOH(s)+ 2 Al(s)+ 6 H₂O(l)→ 2 NaAl(OH)₄(s)+ 3 H₂(g) What is the volume of H₂ gas formed at STP when 6.32 g of Al reacts with excess NaOH?

The density of chlorine gas at 1.21 atm and 34.9°C is ________ g/L.

The mole fraction of carbon dioxide in dry air near sea level is 0.000375,where the molar mass of carbon dioxide is 44.010.The partial pressure of carbon dioxide when the total atmospheric pressure (dry air)is 97.5 kPa is ________ kPa.

Rank the following in order of decreasing rate of effusion. F₂ SF₆ CO Kr

The concentration of ozone in a sample of air that has a partial pressure of O₃ of 0.33 torr and a total pressure of air of 735 torr is ________ ppm.

Matter, Measurement, and Problem Solving

Atoms and Elements

Molecules, Compounds and Chemical Equations

Chemical Quantities and Aqueous Reactions

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

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Filters

Exam 5: Gases

A sample of 0.300 moles of nitrogen occupies 0.600 L.Under the same conditions,what amount of moles occupies 1.200 L?

Place the following gases in order of increasing density at STP. N2 NH3 N2O4 Ar

When 14.0 g of zinc metal reacts with excess HCl,how many liters of H2 gas are produced at STP?

The volume of a gas is proportional to the temperature of a gas is known as

Match the following. -Ideal Gas Law

The density of nitric oxide (NO)gas at 1.21 atm and 54.1°C is ________ g/L.

Match the following. -Charles's Law

A mixture of 10.0 g of Ne and 10.0 g Ar has a total pressure of 1.6 atm.What is the partial pressure of Ne?

A gas occupies 22.4 L at STP and 19.0 L at 100°C and 1.50 atm pressure.How many moles of gas did the system gain or lose?

The density of a gas is 1.43 g/mole at STP.What is the gas?

If NO and NH3 are allowed to effuse through a porous membrane under identical conditions,the rate of effusion for NH3 will be ________ times that of NO.

Match the following. -Boyle's Law

A mixture of He,Ne and Ar has a pressure of 7.85 atm.If the Ne has a mole fraction of 0.47 and Ar has a mole fraction of 0.23,what is the pressure of He?

The reason why a hot air balloon goes up in the air is that

Match the following. -Avogadro's Law

The action of some commercial drain cleaners is based on the following reaction: 2 NaOH(s)+ 2 Al(s)+ 6 H2O(l)→ 2 NaAl(OH)4(s)+ 3 H2(g) What is the volume of H2 gas formed at STP when 6.32 g of Al reacts with excess NaOH?

The density of chlorine gas at 1.21 atm and 34.9°C is ________ g/L.

The mole fraction of carbon dioxide in dry air near sea level is 0.000375,where the molar mass of carbon dioxide is 44.010.The partial pressure of carbon dioxide when the total atmospheric pressure (dry air)is 97.5 kPa is ________ kPa.

Rank the following in order of decreasing rate of effusion. F2 SF6 CO Kr

The concentration of ozone in a sample of air that has a partial pressure of O3 of 0.33 torr and a total pressure of air of 735 torr is ________ ppm.

Matter, Measurement, and Problem Solving

Atoms and Elements

Molecules, Compounds and Chemical Equations

Chemical Quantities and Aqueous Reactions

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

Place the following gases in order of increasing density at STP. N₂ NH₃ N₂O₄ Ar

When 14.0 g of zinc metal reacts with excess HCl,how many liters of H₂ gas are produced at STP?

If NOand NH₃ are allowed to effuse through a porous membrane under identical conditions,the rate of effusion for NH₃ will be ________ times that of NO.

The action of some commercial drain cleaners is based on the following reaction: 2 NaOH(s)+ 2 Al(s)+ 6 H₂O(l)→ 2 NaAl(OH)₄(s)+ 3 H₂(g) What is the volume of H₂ gas formed at STP when 6.32 g of Al reacts with excess NaOH?

Rank the following in order of decreasing rate of effusion. F₂ SF₆ CO Kr

The concentration of ozone in a sample of air that has a partial pressure of O₃ of 0.33 torr and a total pressure of air of 735 torr is ________ ppm.