Question 1

State the Zeroth Law of Thermodynamics.

Accepted Answer

If two systems are each in the

Question 2

On a hot summer day, you turn the thermostat in your house way down. Assume that your house is well sealed and that no air enters or leaves the house. When the air temperature in your house falls a short while later, what statement is correct regarding the air pressure?

Accepted Answer

A) The air pressure is higher at the lower temperature. 
B) The air pressure is lower at the lower temperature. 
C) The air pressure does not change at the lower temperature. 
D) The air pressure increases at first but then decreases again as the temperature approaches its higher value. 
E) The air pressure decreases at first but then increases again as the temperature approaches its lower value. 
A) The air pressure is higher at the lower temperature. 
B) The air pressure is lower at the lower temperature. 
C) The air pressure does not change at the lower temperature. 
D) The air pressure increases at first but then decreases again as the temperature approaches its higher value. 
E) The air pressure decreases at first but then increases again as the temperature approaches its lower value.

Question 3

A mole of diatomic oxygen molecules and a mole of diatomic nitrogen molecules at STP have

Accepted Answer

A) the same average molecular speeds. 
B) the same number of molecules. 
C) the same diffusion rates. 
D) all of the above 
E) none of the above 
A) the same average molecular speeds. 
B) the same number of molecules. 
C) the same diffusion rates. 
D) all of the above 
E) none of the above

Question 4

The Concorde's exterior is made of aluminum, which has a coefficient of linear expansion of 24 × 10-6K-1. At 15°C, the Concorde measures 62.1 m in length. When the plane is in flight, friction with the air increases the temperature of the exterior skin to 200°C. What is the change in the length of the outer skin of the Concorde?

Accepted Answer

A) 20 cm 
B) 24 cm 
C) 28 cm 
D) 32 cm 
E) 36 cm 
A) 20 cm 
B) 24 cm 
C) 28 cm 
D) 32 cm 
E) 36 cm

Question 5

An ideal gas occupies 400 L at an absolute pressure of 500 kPa. Find the absolute pressure if the volume changes to 950 L and the temperature remains constant.

Accepted Answer

A) 500 kPa 
B) 210 kPa 
C) 760 kPa 
D) 950 kPa 
E) 1150 kPa 
A) 500 kPa 
B) 210 kPa 
C) 760 kPa 
D) 950 kPa 
E) 1150 kPa

Question 6

If a thermometer measures the temperature of two objects as being equal, you can conclude that if the objects are placed in thermal contact, no heat will flow between them.

Accepted Answer

A) True 
 B)False

Question 7

A ideal gas constant volume gas thermometer has pressure 2.00 atm at the triple point of water. What is the pressure when the temperature in the thermometer is 500°C?

Accepted Answer

A) 3.66 atm 
B) 1.63 atm 
C) 5.65 atm 
D) 5.98 atm 
E) 4.23 atm 
A) 3.66 atm 
B) 1.63 atm 
C) 5.65 atm 
D) 5.98 atm 
E) 4.23 atm

Question 8

The volume of a given amount of gas is inversely proportional to the absolute temperature when the pressure is kept constant.

Accepted Answer

A) True 
 B)False

Question 9

A constant volume closed container of gas is at a pressure 1.00 × 105 N/m2 and a temperature 20°C. What is the pressure if the temperature of the gas is increased to 60.0°C?

Accepted Answer

A) 0.330 × 105 N/m2  
B) 9.00 × 105 N/m2  
C) 0.880 × 105 N/m2  
D) 3.00 × 105 N/m2  
E) 1.14 × 105 N/m2  
A) 0.330 × 105 N/m2  
B) 9.00 × 105 N/m2  
C) 0.880 × 105 N/m2  
D) 3.00 × 105 N/m2  
E) 1.14 × 105 N/m2

Question 10

How many moles of H2O molecules are in a 4.00 m3 container at a pressure 8.00 × 105 N/m2 and temperature 600°C?

Accepted Answer

A) 7.72 × 1026  
B) 641 
C) 441 
D) 3.86 × 1026  
E) 2.65 × 1026  
A) 7.72 × 1026  
B) 641 
C) 441 
D) 3.86 × 1026  
E) 2.65 × 1026

Question 11

State Charles's law.

Accepted Answer

The volume of a given amount o

Question 12

How many water molecules are there in 36 g of water? Express your answer as a multiple of Avogadro's number NA. (The molecular structure of a water molecule is H2O.)

Accepted Answer

A) 36NA  
B) 2NA  
C) 6NA  
D) 18NA  
E) none of the above 
A) 36NA  
B) 2NA  
C) 6NA  
D) 18NA  
E) none of the above

Question 13

Express 50°C in °F.

Accepted Answer

A) 50°F 
B) 45.6°F 
C) 59.8°F 
D) 122°F 
E) 148°F 
A) 50°F 
B) 45.6°F 
C) 59.8°F 
D) 122°F 
E) 148°F

Question 14

Convert 14°C to K.

Accepted Answer

A) 46 K 
B) 100 K 
C) 187 K 
D) 287 K 
E) 474 K 
A) 46 K 
B) 100 K 
C) 187 K 
D) 287 K 
E) 474 K

Question 15

FIGURE 17-2  
-Two identical concrete slabs lie flat and in contact with each other as shown in Fig. 17-2. If the temperature increases by 40°C, the lower edges opposite the contact edges remained fixed in position, and the lower edges of the contact side remain in contact, at what angle φ will the slabs be tilted? The coefficient of thermal expansion of the concrete is 10 × 10-6/K.

Accepted Answer

A) 18.7° 
B) 0.0283° 
C) 14.5° 
D) 1.62° 
E) answer depends on length of slabs 
A) 18.7° 
B) 0.0283° 
C) 14.5° 
D) 1.62° 
E) answer depends on length of slabs

Question 16

Equal volumes of gas at the same pressure and temperature contain equal numbers of molecules.

Accepted Answer

A) True 
 B)False

Question 17

A bimetallic strip is made by bonding together a 1.0-mm thick and 15.0-cm long steel strip to a similar strip made of aluminum. The strip is straight when the temperature is 20.0°C. What will the radius of curvature of the strip be when the temperature is 40.0°C? The coefficient of thermal expansion of steel is 10.5 × 10-6K-1 and that of aluminum is 23.0 × 10-6K-1.

Accepted Answer

A) 4.0 m 
B) 3.6 m 
C) 4.8 m 
D) 5.2 m 
E) 4.4 m 
A) 4.0 m 
B) 3.6 m 
C) 4.8 m 
D) 5.2 m 
E) 4.4 m

Question 18

State Avogadro's hypothesis.

Accepted Answer

Equal volumes of gas

Question 19

On a cold winter day, you turn up the thermostat in your house. Assume that your house is well sealed and that no air enters or leaves the house. When the air temperature in your house rises a short while later, what statement is correct regarding the air pressure?

Accepted Answer

A) The air pressure is higher at the higher temperature. 
B) The air pressure is lower at the higher temperature. 
C) The air pressure does not change at the higher temperature. 
D) The air pressure increases at first but then decreases again as the temperature approaches its higher value. 
E) The air pressure decreases at first but then increases again as the temperature approaches its lower value. 
A) The air pressure is higher at the higher temperature. 
B) The air pressure is lower at the higher temperature. 
C) The air pressure does not change at the higher temperature. 
D) The air pressure increases at first but then decreases again as the temperature approaches its higher value. 
E) The air pressure decreases at first but then increases again as the temperature approaches its lower value.

Question 20

Convert 14 K to °C.

Accepted Answer

A) 46°C 
B) 287°C 
C) 25°C 
D) -225°C 
E) -259°C 
A) 46°C 
B) 287°C 
C) 25°C 
D) -225°C 
E) -259°C

Exam 17: Temperature, Thermal Expansion, and the Ideal Gas Law

State the Zeroth Law of Thermodynamics.

On a hot summer day, you turn the thermostat in your house way down. Assume that your house is well sealed and that no air enters or leaves the house. When the air temperature in your house falls a short while later, what statement is correct regarding the air pressure?

A mole of diatomic oxygen molecules and a mole of diatomic nitrogen molecules at STP have

An ideal gas occupies 400 L at an absolute pressure of 500 kPa. Find the absolute pressure if the volume changes to 950 L and the temperature remains constant.

If a thermometer measures the temperature of two objects as being equal, you can conclude that if the objects are placed in thermal contact, no heat will flow between them.

A ideal gas constant volume gas thermometer has pressure 2.00 atm at the triple point of water. What is the pressure when the temperature in the thermometer is 500°C?

The volume of a given amount of gas is inversely proportional to the absolute temperature when the pressure is kept constant.

A constant volume closed container of gas is at a pressure 1.00 × 105 N/m2 and a temperature 20°C. What is the pressure if the temperature of the gas is increased to 60.0°C?

How many moles of H2O molecules are in a 4.00 m3 container at a pressure 8.00 × 105 N/m2 and temperature 600°C?

State Charles's law.

How many water molecules are there in 36 g of water? Express your answer as a multiple of Avogadro's number NA. (The molecular structure of a water molecule is H2O.)

Express 50°C in °F.

Convert 14°C to K.

Equal volumes of gas at the same pressure and temperature contain equal numbers of molecules.

State Avogadro's hypothesis.

On a cold winter day, you turn up the thermostat in your house. Assume that your house is well sealed and that no air enters or leaves the house. When the air temperature in your house rises a short while later, what statement is correct regarding the air pressure?

Convert 14 K to °C.

Introduction, Measurement, Estimating

Describing Motion: Kinematics in One Dimension

Kinematics in Two or Three Dimensions; Vectors

Dynamics: Newtons Laws of Motion

Using Newtons Laws: Friction, Circular Motion, Drag Forces

Gravitation and Newtons6 Synthesis

Work and Energy

Conservation of Energy

Linear Momentum

Rotational Motion

Angular Momentum; General Rotation

Static Equilibrium; Elasticity and Fracture

Fluids

Oscillations

Wave Motion

Sound

Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

Second Law of Thermodynamics

Electric Charge and Electric Field

Gausss Law

Electric Potential

Capacitance, Dielectrics, Electric Energy Storage

Electric Currents and Resistance

Dc Circuits

Magnetism

Sources of Magnetic Field

Electromagnetic Induction and Faradays Law

Inductance, Electromagnetic Oscillations, and Ac Circuits

Maxwells Equations and Electromagnetic Waves

Light: Reflection and Refraction

Lenses and Optical Instruments

The Wave Nature of Light; Interference

Diffraction and Polarization

Special Theory of Relativity

Early Quantum Theory and Models of the Atom

Quantum Mechanics

Quantum Mechanics of Atoms

Molecules and Solids

Nuclear Physics and Radioactivity

Nuclear Energy: Efects and Uses of Radiation

Elementary Particle

Astrophysics and Cosmology

Filters

A constant volume closed container of gas is at a pressure 1.00 × 10⁵ N/m² and a temperature 20°C. What is the pressure if the temperature of the gas is increased to 60.0°C?

How many moles of H₂O molecules are in a 4.00 m³ container at a pressure 8.00 × 10⁵ N/m² and temperature 600°C?

How many water molecules are there in 36 g of water? Express your answer as a multiple of Avogadro's number N_A. (The molecular structure of a water molecule is H₂O.)