Question 1

An instrument used to measure blood pressure is called a

Accepted Answer

A)  barometer. 
B)  manometer. 
C)  sphygmomanometer. 
D)  spectrophotometer. 
E)  spectrometer. 
A)  barometer. 
B)  manometer. 
C)  sphygmomanometer. 
D)  spectrophotometer. 
E)  spectrometer.

Question 2

A 0.286-g sample of gas occupies 125 mL at 60.cm of Hg and 25°C.What is the molar mass of the gas?

Accepted Answer

A)  5.9 g/mol 
B)  44 g/mol 
C)  59 g/mol 
D)  71 g/mol 
A)  5.9 g/mol 
B)  44 g/mol 
C)  59 g/mol 
D)  71 g/mol

Question 3

Define effusion.

Accepted Answer

Effusion is the proc

Question 4

Which of the following samples will have the greatest volume at STP?

Accepted Answer

A)  22 g Ne 
B)  22 g He 
C)  22 g O2 
D)  22 g Cl2 
E)  All of these samples would have the same volume at STP. 
A)  22 g Ne 
B)  22 g He 
C)  22 g O2 
D)  22 g Cl2 
E)  All of these samples would have the same volume at STP.

Question 5

Give the major gas in dry air.

Accepted Answer

The answer of Give the major gas in dry air....

Question 6

Which statement is TRUE about kinetic molecular theory?

Accepted Answer

A)  A single particle does not move in a straight line. 
B)  The size of the particle is large compared to the volume of the particle. 
C)  The collisions of particles with one another is completely elastic. 
D)  The average kinetic energy of a particle is not proportional to the temperature. 
A)  A single particle does not move in a straight line. 
B)  The size of the particle is large compared to the volume of the particle. 
C)  The collisions of particles with one another is completely elastic. 
D)  The average kinetic energy of a particle is not proportional to the temperature.

Question 7

The atmospheric pressure is 715 mm Hg.What is the pressure in torr?

Accepted Answer

A)  715 torr 
B)  28.1 torr 
C)  13.8 torr 
D)  31.8 torr 
E)  760 torr 
A)  715 torr 
B)  28.1 torr 
C)  13.8 torr 
D)  31.8 torr 
E)  760 torr

Question 8

Explain what the term "mean free path" describes.How does it change with decreasing pressure?

Accepted Answer

Mean free path describes the distance th

Question 9

This equation is used to calculate the properties of a gas under nonideal conditions.

Accepted Answer

A)  Charles's Law 
B)  Avogadro's Law 
C)  Boyle's Law 
D)  van der Waals equation 
E)  Dalton's Law 
A)  Charles's Law 
B)  Avogadro's Law 
C)  Boyle's Law 
D)  van der Waals equation 
E)  Dalton's Law

Question 10

If the pressure in a gas container that is connected to an open-end U-tube manometer is 116 kPa and the pressure of the atmosphere at the open end of the tube is 752 mm Hg,the level of mercury in the tube will

Accepted Answer

A)  be 118 mm higher in the arm open to the atmosphere. 
B)  be 118 mm higher in the arm connected to the gas cylinder. 
C)  be 870 mm higher in the arm open to the atmosphere. 
D)  be 870 mm higher in the arm connected to the gas cylinder. 
A)  be 118 mm higher in the arm open to the atmosphere. 
B)  be 118 mm higher in the arm connected to the gas cylinder. 
C)  be 870 mm higher in the arm open to the atmosphere. 
D)  be 870 mm higher in the arm connected to the gas cylinder.

Question 11

How many grams of F2 gas are there in a 5.00-L cylinder at 4.00 × 103 mm Hg and 23°C?

Accepted Answer

A)  19.5 g 
B)  41.1 g 
C)  500 g 
D)  2.96 × 104 g 
A)  19.5 g 
B)  41.1 g 
C)  500 g 
D)  2.96 × 104 g

Question 12

For a given set of conditions,a sample of 0.95 moles of Kr occupies 5.20 L.How many moles of Kr will occupy 24.8 L under the same conditions?

Accepted Answer

A)  7.42 mol 
B)  0.0221 mol 
C)  10.5 mol 
D)  4.53 mol 
E)  3.58 mol 
A)  7.42 mol 
B)  0.0221 mol 
C)  10.5 mol 
D)  4.53 mol 
E)  3.58 mol

Question 13

Convert 1.75 atm to psi.

Accepted Answer

A)  52.4 psi 
B)  875 psi 
C)  25.7 psi 
D)  1000 psi 
E)  1330 psi 
A)  52.4 psi 
B)  875 psi 
C)  25.7 psi 
D)  1000 psi 
E)  1330 psi

Question 14

How many liters of hydrogen gas can be generated by reacting 9.25 grams of barium hydride with water at 20°C and 755 mm Hg pressure according to the chemical equation shown below?
BaH2(s)+ 2 H2O(l)→ Ba(OH)2(aq)+ 2 H2(g)

Accepted Answer

A)  0. 219 L 
B)  0. 799 L 
C)  1.60 L 
D)  3.21 L 
A)  0. 219 L 
B)  0. 799 L 
C)  1.60 L 
D)  3.21 L

Question 15

Determine the density of CO2 gas at STP.

Accepted Answer

A)  1.96 g/L 
B)  1.80 g/L 
C)  2.24 g/L 
D)  4.46 g/L 
E)  5.10 g/L 
A)  1.96 g/L 
B)  1.80 g/L 
C)  2.24 g/L 
D)  4.46 g/L 
E)  5.10 g/L

Question 16

Using the graph below,determine the gas that has the highest density at STP.

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  All of the gases have the same density at STP. 
A)  A 
B)  B 
C)  C 
D)  D 
E)  All of the gases have the same density at STP.

Question 17

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)  0.0 7 moles lost 
A)  0.08 moles gained 
B)  0.01 moles gained 
C)  0.01 moles lost 
D)  0.0 7 moles lost

Question 18

Using the graph below,determine the gas that has the lowest density at STP.

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  All of the gases have the same density at STP. 
A)  A 
B)  B 
C)  C 
D)  D 
E)  All of the gases have the same density at STP.

Question 19

To what volume will a sample of gas expand if it is heated from 50.0∘C and 2.33 L to 500.0°C?

Accepted Answer

A)  5.58 L 
B)  23.3 L 
C)  0.233 L 
D)  0.97 L 
E)  0.184 L 
A)  5.58 L 
B)  23.3 L 
C)  0.233 L 
D)  0.97 L 
E)  0.184 L

Question 20

How many mL of O2 gas at 25°C and 755 mm Hg pressure can be produced from the thermal decomposition of 0.300 grams of KClO3(s)according to the chemical equation shown below?
2 KClO3(s)→ 2 KCl(s)+ 3 O2(g)

Accepted Answer

A)  30.1 mL 
B)  40.2 mL 
C)  90.4 mL 
D)  181 mL 
A)  30.1 mL 
B)  40.2 mL 
C)  90.4 mL 
D)  181 mL

Exam 11: Gases

An instrument used to measure blood pressure is called a

A 0.286-g sample of gas occupies 125 mL at 60.cm of Hg and 25°C.What is the molar mass of the gas?

Define effusion.

Which of the following samples will have the greatest volume at STP?

Give the major gas in dry air.

Which statement is TRUE about kinetic molecular theory?

The atmospheric pressure is 715 mm Hg.What is the pressure in torr?

Explain what the term "mean free path" describes.How does it change with decreasing pressure?

This equation is used to calculate the properties of a gas under nonideal conditions.

If the pressure in a gas container that is connected to an open-end U-tube manometer is 116 kPa and the pressure of the atmosphere at the open end of the tube is 752 mm Hg,the level of mercury in the tube will

How many grams of F2 gas are there in a 5.00-L cylinder at 4.00 × 103 mm Hg and 23°C?

For a given set of conditions,a sample of 0.95 moles of Kr occupies 5.20 L.How many moles of Kr will occupy 24.8 L under the same conditions?

Convert 1.75 atm to psi.

How many liters of hydrogen gas can be generated by reacting 9.25 grams of barium hydride with water at 20°C and 755 mm Hg pressure according to the chemical equation shown below? BaH2(s)+ 2 H2O(l)→ Ba(OH)2(aq)+ 2 H2(g)

Determine the density of CO2 gas at STP.

Using the graph below,determine the gas that has the highest density at STP.

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?

Using the graph below,determine the gas that has the lowest density at STP.

To what volume will a sample of gas expand if it is heated from 50.0∘C and 2.33 L to 500.0°C?

How many mL of O2 gas at 25°C and 755 mm Hg pressure can be produced from the thermal decomposition of 0.300 grams of KClO3(s)according to the chemical equation shown below? 2 KClO3(s)→ 2 KCl(s)+ 3 O2(g)

Essentials: Units, Measurements, and Problem Solving

Atoms

The Quantum Mechanical Model of the Atom

Periodic Properties of the Elements

Molecules and Compounds

Chemical Bonding I

Chemical Bonding Ii

Chemical Reactions and Chemical Quantities

Introduction to Solutions and Aqueous Reactions

Thermochemistry

Liquids, Solids, and Intermolecular Forces

Crystalline Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Transition Metals and Coordination Compounds

Filters

How many grams of F₂ gas are there in a 5.00-L cylinder at 4.00 × 10³ mm Hg and 23°C?

How many liters of hydrogen gas can be generated by reacting 9.25 grams of barium hydride with water at 20°C and 755 mm Hg pressure according to the chemical equation shown below? BaH₂(s)+ 2 H₂O(l)→ Ba(OH)₂(aq)+ 2 H₂(g)

Determine the density of CO₂ gas at STP.

To what volume will a sample of gas expand if it is heated from 50.0^∘C and 2.33 L to 500.0°C?

How many mL of O₂ gas at 25°C and 755 mm Hg pressure can be produced from the thermal decomposition of 0.300 grams of KClO₃(s)according to the chemical equation shown below? 2 KClO₃(s)→ 2 KCl(s)+ 3 O₂(g)