Question 1

Which best expresses the value for the coefficient of volume expansion,β,for given material as a function of its corresponding coefficient of linear expansion,α?

Accepted Answer

A) β = α3 
B) β = 3α 
C) β = α2 
D) β = 2α 
A) β = α3 
B) β = 3α 
C) β = α2 
D) β = 2α

Question 2

Carbon dioxide forms into a solid (dry ice)at approximately −157°F.What temperature in degrees Celsius does this correspond to?

Accepted Answer

A) −157°C 
B) −93°C 
C) −121°C 
D) −105°C 
A) −157°C 
B) −93°C 
C) −121°C 
D) −105°C

Question 3

What is the temperature of a system in thermal equilibrium with another system made up of water and steam at one atmosphere of pressure?

Accepted Answer

A) 0°F 
B) 273 K 
C) 0 K 
D) 100°C 
A) 0°F 
B) 273 K 
C) 0 K 
D) 100°C

Question 4

A pressure of 3.00 × 10−7 mm of Hg is achieved in a vacuum system.How many gas molecules are present per liter volume if the temperature is 298 K? (760 mm of Hg = 1 atm,R = 0.082 1 L⋅atm/mol⋅K,and NA = 6.02 × 1023)

Accepted Answer

A) 6.5E+10 
B) 8.6E+16 
C) 9.7E+12 
D) 1.8E+9 
E) ​5.7E+14 
A) 6.5E+10 
B) 8.6E+16 
C) 9.7E+12 
D) 1.8E+9 
E) ​5.7E+14

Question 5

If the temperature of an ideal gas contained in a box is increased

Accepted Answer

A) the average velocity of the molecules in the box will be increased. 
B) the average speed of the molecules in the box will be increased. 
C) the distance between molecules in the box will be increased. 
D) all of the above. 
A) the average velocity of the molecules in the box will be increased. 
B) the average speed of the molecules in the box will be increased. 
C) the distance between molecules in the box will be increased. 
D) all of the above.

Question 6

​A sample of water,H2O,has a mass of 38.0g) How many atoms of oxygen are in the sample? (oxygen has 16.0 g/mol,hydrogen has 1.00 g/mol,and NA = 6.02 × 1023)

Accepted Answer

A) ​3.34 × 1022 
B) ​5.35 × 1023 
C) ​1.27 × 1024 
D) ​2.29 × 1025 
A) ​3.34 × 1022 
B) ​5.35 × 1023 
C) ​1.27 × 1024 
D) ​2.29 × 1025

Question 7

The value 1.38 × 10−23 J/K is known as:

Accepted Answer

A) the universal gas constant. 
B) Boltzmann's constant. 
C) Avogadro's number. 
D) the molar specific. 
A) the universal gas constant. 
B) Boltzmann's constant. 
C) Avogadro's number. 
D) the molar specific.

Question 8

The zeroth law of thermodynamics pertains to what relational condition that may exist between two systems?

Accepted Answer

A) zero net forces 
B) zero velocities 
C) zero temperature 
D) thermal equilibrium 
A) zero net forces 
B) zero velocities 
C) zero temperature 
D) thermal equilibrium

Question 9

A temperature change from 35°C to 55°C corresponds to what incremental change in °F?

Accepted Answer

A) 20 
B) 95 
C) 36 
D) ​131 
E) ​68 
A) 20 
B) 95 
C) 36 
D) ​131 
E) ​68

Question 10

The thermal expansion of a solid is caused by

Accepted Answer

A) the breaking of bonds between atoms. 
B) increasing the amplitude of the atoms vibration. 
C) increasing the distance between equilibrium positions for the vibrating atoms. 
D) all of the above. 
A) the breaking of bonds between atoms. 
B) increasing the amplitude of the atoms vibration. 
C) increasing the distance between equilibrium positions for the vibrating atoms. 
D) all of the above.

Question 11

​Boris completely filled a 2.5-liter container with gasoline at a temperature of 20°C.He then left the gasoline in a storage locker where the temperature reached 38°C.The lid of the container was not screwed on tightly,so gasoline was able to leak out and evaporate.Boris uses the gas in his scooter,which gets 35 km/liter.How far could Boris have ridden his scooter using the lost gas? (gasoline = 9.6 × 10-4/°C)

Accepted Answer

A) ​4.7 m 
B) ​43 m 
C) ​1.5 km 
D) ​180 km 
A) ​4.7 m 
B) ​43 m 
C) ​1.5 km 
D) ​180 km

Question 12

Tricia puts 5.30 g of dry ice (solid CO2)into a 4.00-L container and seals the top.The dry ice turns to gas at room temperature (20.0°C).Find the pressure increase in the 4.00-L container.(One mole of CO2 has a mass of 5.30 g,R = 0.082 1 L⋅atm/mol⋅K.Ignore the initial volume of the dry ice. )

Accepted Answer

A) 24.0 atm 
B) 6.01 atm 
C) 0.318 atm 
D) 11.2 atm 
E) 2.17 atm 
A) 24.0 atm 
B) 6.01 atm 
C) 0.318 atm 
D) 11.2 atm 
E) 2.17 atm

Question 13

​What is -25°F in kelvin?

Accepted Answer

A) ​241.48 K 
B) ​259.26 K 
C) ​228.15 K 
D) ​286.89 K 
A) ​241.48 K 
B) ​259.26 K 
C) ​228.15 K 
D) ​286.89 K

Question 14

At what temperature is the same numerical value obtained in Celsius and Fahrenheit?

Accepted Answer

A) −40° 
B) 0° 
C) 40° 
D) −72° 
A) −40° 
B) 0° 
C) 40° 
D) −72°

Question 15

An ideal gas is confined to a container with adjustable volume.The pressure and mole number are constant.By what factor will volume change if absolute temperature triples?

Accepted Answer

A) 1/9 
B) 1/3 
C) 3 
D) 9 
A) 1/9 
B) 1/3 
C) 3 
D) 9

Question 16

Metal lids on glass jars can often be loosened by running them under hot water.Why is this?

Accepted Answer

A) The hot water is a lubricant. 
B) The metal and glass expand due to the heating,and the glass being of smaller radius expands less than the metal. 
C) The metal has a higher coefficient of thermal expansion than glass so the metal expands more than the glass thus loosening the connection. 
D) This is just folklore. 
A) The hot water is a lubricant. 
B) The metal and glass expand due to the heating,and the glass being of smaller radius expands less than the metal. 
C) The metal has a higher coefficient of thermal expansion than glass so the metal expands more than the glass thus loosening the connection. 
D) This is just folklore.

Question 17

What is the mass of 2 moles of carbon dioxide?

Accepted Answer

A) 88 g 
B) 80 g 
C) 64 g 
D) 56 g 
A) 88 g 
B) 80 g 
C) 64 g 
D) 56 g

Question 18

A material has a coefficient of volume expansion of 40 × 10−6/°C.What is its area coefficient of expansion?

Accepted Answer

A) 20 × 10−6/°C 
B) 27 × 10−6/°C 
C) 80 × 10−6/°C 
D) 60 × 10−6/°C 
E) 13 × 10−6/°C 
A) 20 × 10−6/°C 
B) 27 × 10−6/°C 
C) 80 × 10−6/°C 
D) 60 × 10−6/°C 
E) 13 × 10−6/°C

Question 19

The gas,C3H8,is used in outside grills,and several moles of this gas will burn during an afternoon's grilling.What is the mass of one molecule of this gas?

Accepted Answer

A) 4.4 × 10-23 g 
B) 7.3 × 10-23 kg 
C) 7.3 × 10-26 kg 
D) 8.8 × 10-26 kg 
A) 4.4 × 10-23 g 
B) 7.3 × 10-23 kg 
C) 7.3 × 10-26 kg 
D) 8.8 × 10-26 kg

Question 20

With molar quantity and temperature held constant,by what factor does the pressure of an ideal gas change when the volume is five times bigger?

Accepted Answer

A) 1/5 
B) 1 
C) 5 
D) 25 
A) 1/5 
B) 1 
C) 5 
D) 25

Exam 10: Thermal Physics

Which best expresses the value for the coefficient of volume expansion,β,for given material as a function of its corresponding coefficient of linear expansion,α?

Carbon dioxide forms into a solid (dry ice)at approximately −157°F.What temperature in degrees Celsius does this correspond to?

What is the temperature of a system in thermal equilibrium with another system made up of water and steam at one atmosphere of pressure?

A pressure of 3.00 × 10−7 mm of Hg is achieved in a vacuum system.How many gas molecules are present per liter volume if the temperature is 298 K? (760 mm of Hg = 1 atm,R = 0.082 1 L⋅atm/mol⋅K,and NA = 6.02 × 1023)

If the temperature of an ideal gas contained in a box is increased

​A sample of water,H2O,has a mass of 38.0g) How many atoms of oxygen are in the sample? (oxygen has 16.0 g/mol,hydrogen has 1.00 g/mol,and NA = 6.02 × 1023)

The value 1.38 × 10−23 J/K is known as:

The zeroth law of thermodynamics pertains to what relational condition that may exist between two systems?

A temperature change from 35°C to 55°C corresponds to what incremental change in °F?

The thermal expansion of a solid is caused by

Tricia puts 5.30 g of dry ice (solid CO2)into a 4.00-L container and seals the top.The dry ice turns to gas at room temperature (20.0°C).Find the pressure increase in the 4.00-L container.(One mole of CO2 has a mass of 5.30 g,R = 0.082 1 L⋅atm/mol⋅K.Ignore the initial volume of the dry ice. )

​What is -25°F in kelvin?

At what temperature is the same numerical value obtained in Celsius and Fahrenheit?

An ideal gas is confined to a container with adjustable volume.The pressure and mole number are constant.By what factor will volume change if absolute temperature triples?

Metal lids on glass jars can often be loosened by running them under hot water.Why is this?

What is the mass of 2 moles of carbon dioxide?

A material has a coefficient of volume expansion of 40 × 10−6/°C.What is its area coefficient of expansion?

The gas,C3H8,is used in outside grills,and several moles of this gas will burn during an afternoon's grilling.What is the mass of one molecule of this gas?

With molar quantity and temperature held constant,by what factor does the pressure of an ideal gas change when the volume is five times bigger?

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A pressure of 3.00 × 10−⁷ mm of Hg is achieved in a vacuum system.How many gas molecules are present per liter volume if the temperature is 298 K? (760 mm of Hg = 1 atm,R = 0.082 1 L⋅atm/mol⋅K,and N_A = 6.02 × 10²³)

A sample of water,H₂O,has a mass of 38.0g) How many atoms of oxygen are in the sample? (oxygen has 16.0 g/mol,hydrogen has 1.00 g/mol,and N_A = 6.02 × 10²³)

The value 1.38 × 10−²³ J/K is known as:

What is -25°F in kelvin?

A material has a coefficient of volume expansion of 40 × 10−⁶/°C.What is its area coefficient of expansion?

The gas,C₃H₈,is used in outside grills,and several moles of this gas will burn during an afternoon's grilling.What is the mass of one molecule of this gas?