Question 1

What volume of oxygen is consumed when 3.00 moles of carbon monoxide is produced in the following equation? 2 C(s)+ O2(g)$\rarr$2 CO(g)

Accepted Answer

A) 1.50 L 
B) 33.6 L 
C) 67.2 L 
D) 22.4 L 
A) 1.50 L 
B) 33.6 L 
C) 67.2 L 
D) 22.4 L

Question 2

A pressure of 340.mm Hg is equal to

Accepted Answer

A) 2.24 torr 
B) 0.448 torr 
C) 340.torr 
D) 1.25 torr 
A) 2.24 torr 
B) 0.448 torr 
C) 340.torr 
D) 1.25 torr

Question 3

A pressure of 3.00 atm is equal to

Accepted Answer

A) 819 mm Hg 
B) 3000 mm Hg 
C) 2280 mm Hg 
D) 253 mm Hg 
A) 819 mm Hg 
B) 3000 mm Hg 
C) 2280 mm Hg 
D) 253 mm Hg

Question 4

Which gas has approximately the same density as carbon dioxide gas at STP?

Accepted Answer

A) CH4 
B) C2H6 
C) C3H8 
D) C4H10 
A) CH4 
B) C2H6 
C) C3H8 
D) C4H10

Question 5

A sample of oxygen is collected over water at 22 ° C and 762 torr.What is the partial pressure of the dry oxygen? The vapor pressure of water at 22°C is 19.8 torr.

Accepted Answer

A) 742 torr 
B) 782 torr 
C) 784 torr 
D) 750.torr 
A) 742 torr 
B) 782 torr 
C) 784 torr 
D) 750.torr

Question 6

A sample of gas is in a cylinder of fixed volume.At 30.0 °C its internal pressure is 3200. torr.What will be its pressure at 12.0 ° C?

Accepted Answer

A) 8000.torr 
B) 1280.torr 
C) 3400.torr 
D) 3010.torr 
A) 8000.torr 
B) 1280.torr 
C) 3400.torr 
D) 3010.torr

Question 7

What volume of chlorine is consumed when 12.0 g of HCl is produced in the following equation? H2(g)+ Cl2(g)$\rarr$ 2 HCl(g)

Accepted Answer

A) 3.69 L 
B) 163 L 
C) 14.7 L 
D) 40.8 L 
A) 3.69 L 
B) 163 L 
C) 14.7 L 
D) 40.8 L

Question 8

The pressure of a gas is directly proportional to the number of gas molecules present.

Accepted Answer

A) True 
 B)False

Question 9

A pressure of 3240 torr is equal to

Accepted Answer

A) 0.235 mm Hg 
B) 11.9 mm Hg 
C) 4.26 mm Hg 
D) 3240 mm Hg 
A) 0.235 mm Hg 
B) 11.9 mm Hg 
C) 4.26 mm Hg 
D) 3240 mm Hg

Question 10

A sample of a gas is held at constant temperature.If the number of moles of gas in the sample is doubled while the pressure is halved,what will happen to the volume of the gas sample?

Accepted Answer

A) It will increase. 
B) It will decrease. 
C) It will not change. 
A) It will increase. 
B) It will decrease. 
C) It will not change.

Question 11

A small,0.500 mL,bubble forms at the bottom of a lake where the temperature is 2.0 °C and the pressure is 2.40 atm.What volume will the bubble occupy near the surface wherethe temperature is 32.0 ° C and the pressure is 1.10 atm?

Accepted Answer

Question 12

How many moles are present in 10.0 L of nitrogen gas at STP?

Accepted Answer

A) 2.24 moles 
B) 2.80 moles 
C) 0.446 moles 
D) 224 moles 
A) 2.24 moles 
B) 2.80 moles 
C) 0.446 moles 
D) 224 moles

Question 13

What mass of water is produced when 10.0 L of oxygen react completely in the following equation? 2 C2H6(g)+ 7 O2(g)$\rarr$ 4 CO2(g)+ 6 H2O(g)

Accepted Answer

A) 6.90 g 
B) 21.0 g 
C) 9.39 g 
D) 34.6 g 
A) 6.90 g 
B) 21.0 g 
C) 9.39 g 
D) 34.6 g

Question 14

The density of an unknown gas at STP is 1.63 g/L.Is the gas H2(g),N2(g),HCl(g),or CO2(g)?

Accepted Answer

Question 15

A pressure of 1030 torr is equal to

Accepted Answer

A) 0.738 atm 
B) 0.265 atm 
C) 1.36 atm 
D) 3.77 atm 
A) 0.738 atm 
B) 0.265 atm 
C) 1.36 atm 
D) 3.77 atm

Question 16

Which gas will diffuse most rapidly?

Accepted Answer

A) CO2 
B) N2 
C) He 
D) Cl2 
A) CO2 
B) N2 
C) He 
D) Cl2

Question 17

What is the molar mass of a gas if 30.0 L of the gas at STP has a mass of 16.0 grams?

Accepted Answer

A) 2.05 g 
B) 11.9 g 
C) 21.4 g 
D) 42.0 g 
A) 2.05 g 
B) 11.9 g 
C) 21.4 g 
D) 42.0 g

Question 18

The following figure represents one mole of an ideal gas in a container fit with a movable piston.   Which figure shows the change,if any,that would take place if the Kelvin temperature is doubled under constant pressure?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 19

A 250.mL sample of methane gas is collected over water at 21.0 ° C and 768.0 torr.
The vapor pressure of water at 21.0 ° C is 18.7 torr.What volume will the dry methane gasoccupy at STP?

Accepted Answer

Question 20

The following figure shows 1 mol of an ideal gas inside a container with a movable piston.   If we add two additional moles of gas under constant temperature and pressure,select the alternative that represents the change,if any,that will take place.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

What volume of oxygen is consumed when 3.00 moles of carbon monoxide is produced in the following equation? 2 C(s)+ O₂(g) $\rarr$ 2 CO(g)

A pressure of 340.mm Hg is equal to

A pressure of 3.00 atm is equal to

Which gas has approximately the same density as carbon dioxide gas at STP?

A sample of oxygen is collected over water at 22^°C and 762 torr.What is the partial pressure of the dry oxygen? The vapor pressure of water at 22^°C is 19.8 torr.

A sample of gas is in a cylinder of fixed volume.At 30.0^°C its internal pressure is 3200. torr.What will be its pressure at 12.0^°C?

What volume of chlorine is consumed when 12.0 g of HCl is produced in the following equation? H₂(g)+ Cl₂(g) $\rarr$ 2 HCl(g)

The pressure of a gas is directly proportional to the number of gas molecules present.

A pressure of 3240 torr is equal to

A sample of a gas is held at constant temperature.If the number of moles of gas in the sample is doubled while the pressure is halved,what will happen to the volume of the gas sample?

A small,0.500 mL,bubble forms at the bottom of a lake where the temperature is 2.0^°C and the pressure is 2.40 atm.What volume will the bubble occupy near the surface wherethe temperature is 32.0^°C and the pressure is 1.10 atm?

How many moles are present in 10.0 L of nitrogen gas at STP?

What mass of water is produced when 10.0 L of oxygen react completely in the following equation? 2 C₂H₆(g)+ 7 O₂(g) $\rarr$ 4 CO₂(g)+ 6 H₂O(g)

The density of an unknown gas at STP is 1.63 g/L.Is the gas H₂(g),N₂(g),HCl(g),or CO₂(g)?

A pressure of 1030 torr is equal to

Which gas will diffuse most rapidly?

What is the molar mass of a gas if 30.0 L of the gas at STP has a mass of 16.0 grams?

The following figure represents one mole of an ideal gas in a container fit with a movable piston. Which figure shows the change,if any,that would take place if the Kelvin temperature is doubled under constant pressure?

A 250.mL sample of methane gas is collected over water at 21.0^°C and 768.0 torr. The vapor pressure of water at 21.0^°C is 18.7 torr.What volume will the dry methane gasoccupy at STP?

The following figure shows 1 mol of an ideal gas inside a container with a movable piston. If we add two additional moles of gas under constant temperature and pressure,select the alternative that represents the change,if any,that will take place.

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Exam 12: The Gaseous State of Matter

What volume of oxygen is consumed when 3.00 moles of carbon monoxide is produced in the following equation? 2 C(s)+ O2(g) →\rarr→ 2 CO(g)

A pressure of 340.mm Hg is equal to

A pressure of 3.00 atm is equal to

Which gas has approximately the same density as carbon dioxide gas at STP?

A sample of oxygen is collected over water at 22 ° C and 762 torr.What is the partial pressure of the dry oxygen? The vapor pressure of water at 22°C is 19.8 torr.

A sample of gas is in a cylinder of fixed volume.At 30.0 °C its internal pressure is 3200. torr.What will be its pressure at 12.0 ° C?

What volume of chlorine is consumed when 12.0 g of HCl is produced in the following equation? H2(g)+ Cl2(g) →\rarr→ 2 HCl(g)

The pressure of a gas is directly proportional to the number of gas molecules present.

A pressure of 3240 torr is equal to

A sample of a gas is held at constant temperature.If the number of moles of gas in the sample is doubled while the pressure is halved,what will happen to the volume of the gas sample?

A small,0.500 mL,bubble forms at the bottom of a lake where the temperature is 2.0 °C and the pressure is 2.40 atm.What volume will the bubble occupy near the surface wherethe temperature is 32.0 ° C and the pressure is 1.10 atm?

How many moles are present in 10.0 L of nitrogen gas at STP?

What mass of water is produced when 10.0 L of oxygen react completely in the following equation? 2 C2H6(g)+ 7 O2(g) →\rarr→ 4 CO2(g)+ 6 H2O(g)

The density of an unknown gas at STP is 1.63 g/L.Is the gas H2(g),N2(g),HCl(g),or CO2(g)?

A pressure of 1030 torr is equal to

Which gas will diffuse most rapidly?

What is the molar mass of a gas if 30.0 L of the gas at STP has a mass of 16.0 grams?

The following figure represents one mole of an ideal gas in a container fit with a movable piston. Which figure shows the change,if any,that would take place if the Kelvin temperature is doubled under constant pressure?

A 250.mL sample of methane gas is collected over water at 21.0 ° C and 768.0 torr. The vapor pressure of water at 21.0 ° C is 18.7 torr.What volume will the dry methane gasoccupy at STP?

The following figure shows 1 mol of an ideal gas inside a container with a movable piston. If we add two additional moles of gas under constant temperature and pressure,select the alternative that represents the change,if any,that will take place.

An Introduction to Chemistry

Standards for Measurement

Elements and Compounds

Properties of Matter

Early Atomic Theory and Structure

Nomenclature of Inorganic Compounds

Quantitative Composition of Compounds

Chemical Equations

Calculations From Chemical Equations

Modern Atomic Theory and the Periodic Table

Chemical Bonds: the Formation of Compounds From Atoms

Liquids

Solutions

Acids, Bases, and Salts

Chemical Equilibrium

Oxidationreduction

Nuclear Chemistry

Introduction to Organic Chemistry Online Only

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What volume of oxygen is consumed when 3.00 moles of carbon monoxide is produced in the following equation? 2 C(s)+ O₂(g) $\rarr$ 2 CO(g)

A sample of oxygen is collected over water at 22^°C and 762 torr.What is the partial pressure of the dry oxygen? The vapor pressure of water at 22^°C is 19.8 torr.

A sample of gas is in a cylinder of fixed volume.At 30.0^°C its internal pressure is 3200. torr.What will be its pressure at 12.0^°C?

What volume of chlorine is consumed when 12.0 g of HCl is produced in the following equation? H₂(g)+ Cl₂(g) $\rarr$ 2 HCl(g)

A small,0.500 mL,bubble forms at the bottom of a lake where the temperature is 2.0^°C and the pressure is 2.40 atm.What volume will the bubble occupy near the surface wherethe temperature is 32.0^°C and the pressure is 1.10 atm?

What mass of water is produced when 10.0 L of oxygen react completely in the following equation? 2 C₂H₆(g)+ 7 O₂(g) $\rarr$ 4 CO₂(g)+ 6 H₂O(g)

The density of an unknown gas at STP is 1.63 g/L.Is the gas H₂(g),N₂(g),HCl(g),or CO₂(g)?

A 250.mL sample of methane gas is collected over water at 21.0^°C and 768.0 torr. The vapor pressure of water at 21.0^°C is 18.7 torr.What volume will the dry methane gasoccupy at STP?