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Thermal Physics 2

Total questions: 137

Worksheet time: 2hrs 39mins

Name
Class
Date
1.

If two objects have different temperatures, heat will flow from the hotter object to the colder one UNTIL ____________

a)
one reaches a temperature of zero
b)
they both have an equal temperature
c)
one runs out of energy
2.
Temperature is a measure of the...
a)
total energy in a substance
b)
total kinetic energy in a substance
c)
average potential energy in a substance
d)

average kinetic energy of the particles in a substance

3.
What letter represents heat?
a)
S
b)
C
c)
T
d)
Q
4.
What is 0oC in Kelvin?
a)
110 K
b)
100 K
c)
273 K
d)
210 K
5.

How much heat is absorbed when 355g of water goes from 25-45 degrees Celsius? The specific heat capacity of water is 4180 J/kgK. 

a)
21945 J
b)
21945 g
c)
29678 J
d)
29678 g
6.
To convert from Celsius to Kelvin:
 
K = Degrees Celsius + __________  
a)
251 K
b)
275 K
c)
213 K
d)
273 K
7.

The symbol for specific latent heat is...

a)

c

b)

ll

c)

Q

d)

m

8.

The heat absorbed by melting a solid is known as

a)

latent heat of fusion

b)

latent heat of solid

c)

latent heat of liquid

d)

latent heat of vaporisation

9.

What is the formula to calculate specific latent heat of vaporisation?

a)

l=Qml=\frac{Q}{m}

b)

c = Q/(mΔƟ)

c)

Q = mcΔƟ

d)

Q=mlQ=ml

10.
No more energy can be removed from matter at:
a)
its freezing point
b)
0°C
c)
absolute zero
d)
273 K
11.

if 334000 J of heat is required to change state of 1 kg of ice into water then heat of fusion is

a)

668000 J/kg

b)

334000 kg

c)

334000 J/kg

d)

668000 J

12.

The amount of heat required to change 1 kg of liquid into gas at constant temperature is called

a)

heat of fusion

b)

heat of vaporization

c)

heat of change of state

d)

heat of solid

13.

What is internal energy?

a)

the average kinetic energy of the particles

b)

heat energy (thermal energy)

c)

the sum of the kinetic and potential energies of the particles

d)

the average potential energy

14.

Which value is larger for a substance?

a)

Latent heat of fusion

b)

Latent heat of vaporisation

15.
a)

A

b)

B

c)

C

d)

D

16.
a)

A

b)

B

c)

C

d)

D

17.
a)

A

b)

B

c)

C

d)

D

18.
a)

A

b)

B

c)

C

d)

D

19.
a)

A

b)

B

c)

C

d)

D

20.
a)

A

b)

B

c)

C

d)

D

21.
a)

A

b)

B

c)

C

d)

D

22.
a)

A

b)

B

c)

C

d)

D

23.
a)

A

b)

B

c)

C

d)

D

24.
a)

A

b)

B

c)

C

d)

D

25.
a)

A

b)

B

c)

C

d)

D

26.
a)

A

b)

B

c)

C

d)

D

27.
a)

A

b)

B

c)

C

d)

D

28.
a)

A

b)

B

c)

C

d)

D

29.

A scientist is feeling sick and knows that if her temperature is a degree or more above 37.5°C she should go home from work. But all she has is a thermometer graduated in kelvin. What temperature does the thermometer need to be?

a)

194.5 K

b)

310.5 K

c)

311.5 K

d)

325.5 K

30.

The specific heat of a liquid is 1000 J kg-1 K-1. What amount of heat is needed to raise the temperature of 4.0 kg of liquid from 30°C to 40°C?

a)

4.0 × 103 J

b)

2.0 × 104 K

c)

4.0 × 104 J

d)

4.0 × 104 K

31.

A 2.0 kg solid has a specific latent heat of of fusion of 220 kJ kg-1. An electric heater of power 1500 W is used to heat the solid. Assuming no heat loss, how long does it take to completely melt the solid at constant temperature?

a)

290 seconds

b)

290 minutes

c)

150 seconds

d)

150 minutes

32.

A mass m of ice at a temperature of –5 °C is changed into water at a temperature of 50 °C.


Specific heat capacity of ice = ci

Specific heat capacity of water = cw

Specific latent heat of fusion of ice = L


Which expression gives the energy needed for this change to occur?

a)

55 m cw + m L

b)

55 m ci + 5 m L

c)

5 m ci + 50 m cw + m L

d)

5 m ci + 50 m cw + 5 m L

33.

Energy is supplied at a constant rate to a fixed mass of a material. The material begins as a solid. The graph shows the variation of the temperature of the material with time.


The specific heat capacities of the solid, liquid and gaseous forms of the material are cs cl and cg respectively. What can be deduced about the values of cs cl and cg?

a)

cs > cg > cl

b)

cl > cs > cg

c)

cl > cg > cs

d)

cg > cs > cl

34.

Which of the following is numerically equal to the specific heat capacity of the substance of a solid body?

a)

The thermal energy required to melt the body

b)

The thermal energy required to increase the temperature of unit mass of the body by 1K

c)

The thermal energy required to increase the temperature of the body by 1K

d)

The total kinetic and potential energy of all the molecules in the body

35.

A fixed mass of an ideal gas in a closed container with a movable piston initially occupies a volume V. The position of the piston is changed, so that the mean kinetic energy of the particles in the gas is doubled and the pressure remains constant.


What is the new volume of the gas?

a)

V4\frac{V}{4}

b)

V2\frac{V}{2}

c)

2V2V

d)

4V4V

36.

An ideal gas is contained in a thermally insulated cylinder by a freely moving piston.


The gas is compressed by the piston and as a result the temperature of the gas increases. What is the explanation for the temperature rise?

a)

The rate of collision between the molecules increases.

b)

Energy is transferred to the molecules by the moving piston.

c)

The molecules of the gas are pushed closer together.

d)

The rate of collision between the molecules and the walls of the cylinder increases.

37.
A partially-inflated balloon is placed inside a bell jar. The bell jar is connected to an air pump. The air pump is switched on and air is removed from the bell jar.
What happens to the pressure and to the volume of the gas inside the balloon? 
a)
pressure decreases
volume decreases 
b)
pressure decreases 
volume increases 
c)
pressure increases 
volume decreases 
d)
pressure increases 
volume increases 
38.

Boiling water is heated in a 2 kW electric kettle. The initial mass of water is 0.4 kg. Assume the specific latent heat of vaporization of water is 2 MJ kg–1.

What is the time taken for all the water to vaporize?

a)

250 s

b)

400 s

c)

2500 s

d)

4000 s

39.

A 700 W electric heater is used to heat 1 kg of water without energy losses. The specific heat capacity of water is 4.2 kJ kg–1 K–1. What is the time taken to heat the water from 25 °C to 95 °C?

a)

7 s

b)

30 s

c)

7 minutes

d)

420 minutes

40.

If a substance is cooled or heated , the change in mass of the substance is

a)

a) positive

b)

b) negative

c)

c) Zero

d)

d) none of the above

41.

The value of Universal gas constant

a)

a) 3.81 J/mol/K

b)

b) 8.03 J/mol/K

c)

c) 1.38 J / mol /K

d)

d) 8.31 J/ mol/K

42.

------------------ is the total number of atoms per mole of the substance

a)

a)Avogadro's number

b)

b)mole

c)

c)none

d)

d)both a and b

43.

Boltzmann constant

a)

1.38 x 10 -23 JK

b)

1.38 x 10 -23 J/K

c)

138 x 10 -23 JK

d)

138 x 10 -23 J /K

44.

The SI unit of heat energy absorbed or evolved is

a)

Kelvin

b)

Joule

c)

JS

d)

JS-1

45.

If two bodies are in thermal equilibrium then , they will be at the -------- temperature

a)

same

b)

different

c)

either a or b

d)

none

46.

-------------- kelvin is the absolute scale of temperature of the body

a)

one

b)

zero

c)

none

d)

273

47.

The temperature is higher for a ---------body than for a -------body

a)

hotter , chiller

b)

hotter , colder

c)

chiller , hotter

d)

chiller , hotter

48.

The temperature and heat are ---------- quantities

(a)  

49.

The law of volume is also known as------------

(a)  

50.
True or false: Heat moves from the cooler object to a warmer object
a)
True
b)
False
51.

Joules and calories are units of measurement for __________________.

a)

heat

b)

insulators

c)

conductors

d)

thermometers

52.
Temperature is a measure of the...
a)
total energy in a substance
b)
total kinetic energy in a substance
c)
average potential energy in a substance
d)
average kinetic energy of molecules in a substance
53.

The graph shows how the temperature of the substance changes with time.

a)

gas condensing

b)

gas cooling

c)

liquid cooling

d)

liquid solidifying

54.

The graph shows how the temperature of a liquid varies with time when energy is supplied to the liquid at a constant rate P. The gradient of the graph is K and the liquid has a specific heat capacity c.

What is the mass of the liquid?

a)

PcK\frac{P}{cK}

b)

PKc\frac{PK}{c}

c)

PcK\frac{Pc}{K}

d)

cKP\frac{cK}{P}

55.

The fraction of the internal energy that is due to molecular vibration varies in the different states of matter. What gives the order from highest fraction to lowest fraction of internal energy due to molecular vibration?

a)

liquid > gas > solid

b)

solid > liquid > gas

c)

solid > gas > liquid

d)

gas > liquid > solid

56.

A mass m of ice at a temperature of –5 °C is changed into water at a temperature of 50 °C.


Specific heat capacity of ice = ci

Specific heat capacity of water = cw

Specific latent heat of fusion of ice = L


Which expression gives the energy needed for this change to occur?

a)

55 m cw + m L

b)

55 m ci + 5 m L

c)

5 m ci + 50 m cw + m L

d)

5 m ci + 50 m cw + 5 m L

57.

A liquid is initially at its freezing point. Energy is removed at a uniform rate from the liquid until it freezes completely.

Which graph shows how the temperature T of the liquid varies with the energy Q removed from the liquid?

a)
b)
c)
d)
58.

Which of the following is equivalent to a temperature of –100°C?

a)

–373 K

b)

–173 K

c)

173 K

d)

373 K

59.

A fixed mass of water is heated by an electric heater of unknown power P. The following quantities are measured


I. mass of water

II. increase in water temperature

III. time for which water is heated.


In order to calculate P, the specific heat capacity of the water is required. Which are also required?

a)

I and II only

b)

I and III only

c)

II and III only

d)

I, II and III

60.

A sealed container contains water at 5 °C and ice at 0 °C. This system is thermally isolated from its surroundings. What happens to the total internal energy of the system?

a)

It remains the same.

b)

It decreases.

c)

It increases until the ice melts and then remains the same.

d)

It increases.

61.

A pure solid is heated at its melting point. While it is melting the

a)

mean kinetic energy of the molecules of the solid increases.

b)

mean potential energy of the molecules of the solid increases.

c)

temperature of the solid increases.

d)

temperature of the solid decreases.

62.

A sealed cylinder of length l and cross-sectional area A contains N molecules of an ideal gas at kelvin temperature T.


What is the force acting on the area of the cylinder marked A due to the gas?

a)

NRTl\frac{NRT}{l}

b)

NRTlA\frac{NRT}{lA}

c)

NkBTlA\frac{Nk_BT}{lA}

d)

NkBTl\frac{Nk_BT}{l}

63.

A fixed mass of an ideal gas is trapped in a cylinder of constant volume and its temperature is varied. Which graph shows the variation of the pressure of the gas with temperature in degrees Celsius?

a)
b)
c)
d)
64.

What is the definition of the mole?

a)

The amount of substance that has the same mass as 6.02 × 1023 atoms of carbon-12.

b)

The amount of substance that contains as many nuclei as the number of nuclei in 12 g of carbon-12.

c)

The amount of substance that has the same mass as one atom of carbon-12.

d)

The amount of substance that contains as many elementary entities as the number of atoms in 12 g of carbon-12.

65.

Which of the following is not an assumption of the kinetic model of ideal gases?

a)

All particles in the gas have the same mass.

b)

All particles in the gas have the same speed.

c)

The duration of collisions between particles is very short.

d)

Collisions with the walls of the container are elastic.

66.

The energy of the molecules of an ideal gas is

a)

thermal only.

b)

thermal and potential.

c)

potential and kinetic.

d)

kinetic only.

67.

The volume of an ideal gas in a container is increased at constant temperature. Which of the following statements is/are correct about the molecules of the gas?


I. Their average speed remains constant.

II. The frequency of collisions of molecules with unit area of the container wall decreases.

III. The force between them decreases.

a)

I only

b)

I and II only

c)

I and III only

d)

II and III only

68.

Energy is supplied at a constant rate to a fixed mass of a material. The material begins as a solid. The graph shows the variation of the temperature of the material with time.


The specific heat capacities of the solid, liquid and gaseous forms of the material are cs cl and cg respectively. What can be deduced about the values of cs cl and cg?

a)

cs > cg > cl

b)

cl > cs > cg

c)

cl > cg > cs

d)

cg > cs > cl

69.

Which of the following is numerically equal to the specific heat capacity of the substance of a solid body?

a)

The thermal energy required to melt the body

b)

The thermal energy required to increase the temperature of unit mass of the body by 1K

c)

The thermal energy required to increase the temperature of the body by 1K

d)

The total kinetic and potential energy of all the molecules in the body

70.
A partially-inflated balloon is placed inside a bell jar. The bell jar is connected to an air pump. The air pump is switched on and air is removed from the bell jar.
What happens to the pressure and to the volume of the gas inside the balloon? 
a)
pressure decreases
volume decreases 
b)
pressure decreases 
volume increases 
c)
pressure increases 
volume decreases 
d)
pressure increases 
volume increases 
71.

Boiling water is heated in a 2 kW electric kettle. The initial mass of water is 0.4 kg. Assume the specific latent heat of vaporization of water is 2 MJ kg–1.

What is the time taken for all the water to vaporize?

a)

250 s

b)

400 s

c)

2500 s

d)

4000 s

72.

A 700 W electric heater is used to heat 1 kg of water without energy losses. The specific heat capacity of water is 4.2 kJ kg–1 K–1. What is the time taken to heat the water from 25 °C to 95 °C?

a)

7 s

b)

30 s

c)

7 minutes

d)

420 minutes

73.
Which direction will the heat flow while this person holds a hot cup of tea?
a)
from the cup to her hand
b)
from her hand to the cup
c)
no heat is transferred
74.

The SI unit of heat energy absorbed or evolved is

a)

Kelvin

b)

Joule

c)

JS

d)

JS-1

75.
Heat transfers from an area of ____temperature to an area of ___ temperature.
a)
high to low
b)
low to high
c)
high to high
d)
It can travel high to low and low to high. 
76.

The value of universal gas constant is …………………………..

a)

1.38 x 10-23 JK-1

b)

8.31 J mol-1 K-1

c)

6.023 x 1023

77.

The SI unit of heat energy is …………………..

a)

Joule

b)

Kelvin

c)

K-1

78.

According to Boyle’s law, at constant temperature, the volume of a gas is directly proportional to the temperature of the gas.

(a)  

79.

The value of universal gas constant

a)

3.81 Jmol–1 K–1

b)

8.03 Jmol–1 K–1

c)

1.38 Jmol–1 K–1

d)

8.31 Jmol–1 K–1

80.

In the Given diagram, the possible direction
of heat energy transformation is

a)

A ⟵\longleftarrow  B, AC, B C

b)

A ⟶\longrightarrow  B, A C, B C

c)

A ⟵\longleftarrow  B, A C,  B C

d)

A ⟵\longleftarrow  B, A ⟶\longrightarrow  C, B ⟵\longleftarrow  C

81.

The value of Avogadro number ________

a)

6.023 X 1023 mol-1

b)

6.023 X 1024 mol-1

c)

60.23 X 1023 mol-1

d)

602.3 X 1023 mol-1

82.

The temperature and heat are (a)  

quantities

83.

Thermal energy always flows from a system

at higher temperature to a system at lower

temperature.

a)

True

b)

False

84.

According to Charles’s law, at constant

pressure, the temperature is inversely

proportional to volume.

a)

True

b)

False

85.

Heat transformation

a)

change in volume

b)

hot body to cold

body

c)

1.381 X 10-23 JK-1

d)

change in length

e)

change in area

86.

Boltzmann constant

a)

change in volume

b)

hot body to cold

body

c)

1.381 X 10-23 JK-1

d)

change in length

e)

change in area

87.

According to Charles’s law, at constant

pressure, the temperature is (a)  

proportional to volume.

88.

Which of the following statements about the kinetic theory of gases is NOT true:

a)

All molecules move with the same speed.

b)

Their average kinetic energy is directly proportional to the absolute temperature.

c)

All molecules make elastic collisions with each other and the walls of the container.

d)

The molecules travel in straight lines until they collide.

89.

When one end of a cold metal spoon is placed upright in a cup of hot coffee, the other end gets hotter. Which one of the following best describes what is happening?

a)

Warmer molecules will rise to the top.

b)

The hot molecules produce thermal radiation that is then absorbed by the colder molecules.

c)

Higher-energy molecules hit lower-energy molecules, increasing their speed and therefore their temperature.

d)

Lower-energy molecules hit higher-energy molecules and the friction increases their temperature.

90.

A sealed container of air is kept at a constant temperature. What will happen to the speed of the molecules of air in the container as time passes?

a)

The molecules will all reach the same speed.

b)

Some molecules will speed up and others will slow down, but the average speed will be constant.

c)

The molecules will slow down.

d)

There will be no change.

91.

If two objects labelled B and C are both at thermal equilibrium with object A, which of the following must be true?

a)

Objects B and C are in thermal equilibrium with each other.

b)

Object B has a higher temperature than object C.

c)

Object C has a higher temperature than object B.

d)

Objects B and C are not in thermal equilibrium with each other.

92.

A cube of ice is placed in a foam cup and it begins to melt. The air temperature is 23°C. Which one of the following best describes the temperature of the water that is formed?

a)

less than 0°C

b)

0°C

c)

room temperature

d)

greater than 0°C but less than room temperature

93.

During an energy transfer process, 1000 J of heat are removed from a gas while 100 J of work is done by the gas. What is the change in internal energy of the gas?

a)

+1100 J

b)

+900 J

c)

–900 J

d)

–1100 J

94.
True or false: Heat moves from the cooler object to a warmer object
a)
True
b)
False
95.
All atoms are vibrating, hot atoms have more energy. When hot atoms bump into cold atoms they transfer energy.
a)
True
b)
False
96.
High temperature is connected to:
a)
Low kinetic energy.
b)
High kinetic energy.
c)
Zero net energy.
d)
Equal kinetic energies.
97.
What is 0oC in Kelvin?
a)
110 K
b)
100 K
c)
273 K
d)
210 K
98.
To convert from Celsius to Kelvin:
 
K = Degrees Celsius + __________  
a)
251 K
b)
275 K
c)
213 K
d)
273 K
99.

Water of depth 10 m exerts a pressure equal to atmospheric pressure.

An air bubble rises to the surface of a lake which is 20 m deep. When the bubble reaches the surface, its volume is 6.0 cm3.

What is the volume of the air bubble at the bottom of the lake?

a)

2.0 cm3

b)

3.0 cm3

c)

12 cm3

d)

18 cm3

100.

A gas in a container of fixed volume is heated.

What happens to the molecules of the gas?

a)

They collide less frequently.

b)

They expand.

c)

They move faster.

d)

They move further apart.

101.

A fixed mass of gas undergoes a change of volume at constant temperature.

Which diagram shows the relationship between the volume and the pressure of the gas?

a)

A

b)

B

c)

C

d)

D

102.

A substance consists of particles that are close together and moving past each other at random. The average speed of the particles is gradually increasing.

What best describes the substance?

a)

a gas being heated

b)

a liquid being heated

c)

a liquid undergoing solidification

d)

a solid being heated

103.

The table shows the melting points and the boiling points of some elements.

Which element is a liquid over the largest range of temperature?

a)

A

b)

B

c)

C

d)

D

104.

Some ice cubes are taken from a freezer and heated in a container. The readings of temperature and time are recorded on the graph.

Which temperature is 0 °C?

a)

A

b)

B

c)

C

d)

D

105.

The mercury-in-glass thermometer shown has a linear scale.

At a temperature of 100 °C, h has a value of 28 cm. At 80°C, h has a value of 24 cm.

What is the value of h when the temperature is 0 °C?

a)

0.0 cm

b)

2.8 cm

c)

4.0 cm

d)

8.0 cm

106.

A fixed mass of gas is enclosed in a cylinder with a movable piston.

The gas is initially at pressure p1 and has a volume V1.

The temperature is kept constant. The piston is moved so that the pressure becomes p2 and the volume becomes V2.

Which equation is correct?

a)

p1/V1 = p2/V2

b)

p1/p2 = V1/V2

c)

p1V1 = p2V2

d)

p1V2 = p2V1

107.

A tray for making ice cubes holds 30 g of water. The specific latent heat of fusion of ice is 3.3 × 105 J/kg.

How much thermal energy is removed from the water at 0 °C to change it into ice at 0 °C?

a)

9.9 × 103 J

b)

1.1 × 104 J

c)

9.9 × 106 J

d)

1.1 × 107 J

108.

A sealed container of gas is heated and the pressure inside increases.

What happens to the molecules of the gas to cause this increase in pressure?

a)

Their kinetic energy decreases.

b)

They become heavier.

c)

They expand.

d)

They hit the container more frequently.

109.

An ideal gas has a density of 2.0 kgm-3 at a pressure of 2.2 x 105 Pa and a temperature of 295 K. Calculate the mean square speed of the gas atoms.

a)

330 kms-1

b)

110 000 ms-1

c)

373 ms-1

d)

19 ms-1

110.

For an ideal gas several assumptions are made about the particles including

a)

they collide elastically with each other and the container wall

b)

they experience significant intermolecular forces

c)

the volume they occupy as individual particles is insignificant compared to the volume of the container

d)

there are a very large number of particles inside the container

111.

In the equation of state for an ideal gas pV = nRT

a)

n = number of particles in the gas

b)

p = pressure of the gas

c)

R = the molar gas constant 8.31 JK-1mol-1

d)

T = temperature in degrees celcius

112.

Rewriting the equation of state gives : pV = NkT

where:

a)

N = the number of moles x 6.022 x 1023

b)

V = volume occupied by the gas

c)

T = temperature in degrees celsius

d)

k = 1.38 x 10-2 JK-1

113.

Given the equation Ek = 3/2 kT, calculate the temperature of Helium atoms that are able to leave the atmosphere with a speed of 1.1 x 104ms-1. The mass of an individual Helium atom is 6.6 x 10-27kg. (k = 1.38x10-23)

a)

1.9 x 104 K

b)

1.9 x 103 o C

c)

1.5 x 102 K

d)

200 K

114.

The mean square speed of atoms of Neon gas at 273 K with density 0.900 kgm-3 is 3.4 x 105 ms-1. Calculate the r.m.s. of the same gas at 546 K.

a)

820 ms-1

b)

680 000 ms-1

c)

240 ms-1

d)

340 000 ms-1

115.

For an ideal gas at constant temperature and density ρ what effect would doubling the density have on the mean square speed?

a)

none

b)

mean square speed would double

c)

mean square speed would halve

d)

mean square speed would quadruple

116.

For an ideal gas at constant temperature and pressure p at volume V, what affect would halving the pressure have on the volume?

a)

volume would double

b)

volume would halve

c)

volume would triple

d)

none

117.

For an ideal gas trapped inside a container of fixed volume, which of these statements is true?

a)

all particles are moving rapidly and randomly

b)

particles exchange momentum with the wall over very short time frames

c)

all particles are moving idly and haphazardly

d)

the particle volume accounts for most of the space in the container

118.

Select all true statements

a)

nR = Nk

b)

NA = 6.022 x 1023

c)

k = R/NA

d)

3/2RT = NAEk

119.

An ideal gas has a density of 2.0 kgm-3 at a pressure of 2.2 x 105 Pa and a temperature of 295 K. Calculate the root-mean-square speed of the gas atoms.

a)

570 ms-1

b)

110 000 ms-1

c)

373 ms-1

d)

19 ms-1

120.

Which of the following is the ideal gas equation?

a)

pV = nRT

b)

pT = nRV

c)

pR = nRV

d)

pn = VRT

121.

How many atoms are there in a mole of helium gas?

a)

6.02 × 1013

b)

6.02 × 1023

c)

1.20 × 1014

d)

1.20 × 1024

122.

Which assumptions are made in the kinetic theory of gases?

a)

No forces between molecules.

b)

Volume of molecules is negligible.

c)

Molecules move in sync all the time.

d)

Molecules collide inelastically with each other.

123.

A bar of gold has a mass of 1.00 kg. Calculate the number of moles of gold in the bar. (Relative atomic mass of gold = 197.)

a)

1.97 × 10−3 mol

b)

0.197 mol

c)

5.08 mol

d)

5.08 × 10−3 mol

124.

The following gases are at the same temperature. Which molecule will have the slowest r.m.s. speed?

a)

hydrogen

b)

carbon dioxide

c)

oxygen

d)

helium

125.

All of the following are temperature units except ______

a)

atm

b)

Kelvin

c)

Celsius

d)

Farenheit

126.

What law combines all 3 factors (pressure, temperature, and volume)

a)

Combined Gas Law

b)

Charle's Law

c)

Boyle's Law

d)

Avogadros Ideal Gas Law

e)

none are correct

127.

What volume of methane gas at 273 K and 101.33 kPa do you have when the volume is decreased to 0.50 L, with a temperature of 300 K and a pressure of 151.99 kPa.

a)

0.68 L

b)

0.82 L

c)

0.50 L

d)

0.37 L

128.

Calculate the volume that a 0.323 mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.

a)

7.18 L

b)

7.81 L

c)

4.63 L

d)

4.36 L

129.

A 500 mL metal cylinder holding 0.100 moles of helium gas is known to rupture at a pressure of 10 atmospheres. At what temperature, in °C, will the container fail?

a)

336 °C

b)

608 740 °C

c)

- 272.4°C

d)

609 °C

130.
Gases have...
a)
A definite shape and volume
b)
A definite shape but no definite volume
c)
No definite shape but a definite volume
d)
No definite shape or volume
131.
What is the variable for this number 9.10 atm
a)
P
b)
T
c)
n
d)
V
132.
What is the variable for this number 32oC
a)
P
b)
T
c)
n
d)
V
133.
What is the variable for this number 22.4 L
a)
P
b)
T
c)
n
d)
V
134.
What is the variable for this number 1.5 mol
a)
P
b)
T
c)
n
d)
V
135.
PV=nRT
a)
Charles Law
b)
Boyle's Law
c)
Combined Gas Law
d)
Ideal Gas Law
136.

What does R stand for

a)

Ideal gas constant

b)

Real gas constant

c)

Temperature constant

d)

Ideal gas law

137.
In the ideal gas law, which variable represents the gas constant?
a)
n
b)
R
c)
T
d)
V

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