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Unit 3 Review (Gas Laws)

Total questions: 46

Worksheet time: 2hrs 15mins

Name
Class
Date
1.

The freezing point of water is

a)

0 Kelvin

b)

0 Celsius

c)

212 Farenheit

d)

-273 Kelvin

e)

100 Celsius

2.

How many moecules are in one mole of water, H2O?

a)

22.4 molecules

b)

6.02 x 1023 molecules

c)

273 molecules

d)

1.00 molecule

3.
When a basketball is left outside in the cold it goes flat because the volume of air inside the ball has been reduced. What  gas law does this represent?
a)
Boyle's Law
b)
Charles's Law
4.
What will happen to the volume of a gas if the pressure increases, with constant temperature ?
a)
Increase
b)
Decrease
c)
Nothing
d)
Explosion!
5.

If 6.00L of gas at 293K is compressed to 4.00L, what is the new temperature?

a)

195K

b)

439K

c)

0.0820K

d)

12.2K

6.

The temperature at which all molecular motion stops is

a)

-460 .C

b)

-273 Kelvin

c)

0 Kelvin

d)

0.C

7.

Which phase of matter is the MOST dense?

a)

liquid

b)

gas

c)

solid

8.

The kinetic molecular theory states that all of the particles that make up matter are constantly

a)

growing

b)

shrinking

c)

crying

d)

moving

9.

According to the Kinetic Molecular Theory of gases at higher temperatures...

a)

particles in an object have less energy

b)

particles in an object move faster

c)

a gas contracts

10.

If you place a fully blown balloon into a freezer, what will happen to the overall size of the balloon?

Hint: balloon has been tied off, keeping volume constant.

a)

Doubles

b)

increases

c)

decreases

d)

stays still

11.

Which container will have a lower pressure? Why?

a)

left; Increased volume, lower pressure

b)

right; decreased volume, lower pressure

c)

they both have the same pressure

d)

left; decreased volume, lower pressure

e)

right; Increased volume, lower pressure

12.

If amount of gas and volume remain constant, how are pressure and temperature related?

a)

Directly

b)

Indirectly

c)

They aren't related

13.

A gas has a volume of 3.50L at 200K. If the volume changes to 7 Liters, what is the new temperature?

a)

100K

b)

300K

c)

350K

d)

400K

14.

If I have 2.00 moles of a gas at a temperature of 250.0 K and a volume of 8.50 liters, what is the pressure?

a)

0.673atm

b)

1.41atm

c)

2.91atm

d)

4.83atm

15.

Which of the following would increase the (gas) pressure in a container?

a)

Decreasing the temperature

b)

Increasing the Volume

c)

Increasing the number of the particles

d)

Removing gas particles

16.

You collect 85.0mL of ice. When melted down, what volume of water would result?

a)

78.2mL

b)

92.4mL

c)

85.0mL

d)

170.mL

17.

The number of eggs you have is proportional to the number of cartons of eggs you have. A carton of eggs holds a dozen eggs. How many cartons do you have if you have 36 eggs?

a)

1 carton

b)

3 cartons

c)

6 cartons

d)

2 cartons

18.

How many atoms of iodine are in one mole of iodine?

a)

22.4

b)

63.55g

c)

126.9

d)

6.02 x 1023

19.
Which has more molecules?
a)
1 mole H2O
b)
1 mole Al(OH)3
c)
1 mole NaCl
d)
There are all the same
20.
LeGarrette Blount decides to go scuba diving while on vacation in Mexico. As he swims deeper into the ocean, the pressure pushing on him increases. Based on the relationship in Boyle’s law, what would happen to the volume of a LeGarrette’s lungs with this increase in pressure?
a)
volume of the lungs would increase
b)
volume of the lungs would have no change
c)
volume of the lungs would double
d)
volume of the lungs would decrease
21.

What is the Molar volume of any gas at STP?

a)

22.4 L

b)

2.24 L

c)

6.02 x 1023 L

d)

224 L

22.

Which gas variable is associated with the STP 22.4 Liters?

a)

Pressure

b)

Temperature

c)

Amount of gas

d)

Volume

23.

Which are the correct units for the universal gas constant, R?

a)

atm x L/mol x K

b)

L x atm/Celsius x mols

c)

mmHg x L/mol x K

d)

mol x K/TORR x L

24.

What pressure, in atm, is exerted by 2.50 L of gas containing 1.35 mol at 47.0 oC?

a)

14.2 atm

b)

16.5 atm

c)

18.4 atm

d)

22.5 atm

25.
When a cold tire is inflated to a certain pressure and then is warmed up due to friction with the road, the pressure increases. This happens because the
a)
air molecules hit the walls of the tire less frequently
b)
rubber in the tires reacts with oxygen in the atmosphere
c)
air molecules speed up and collide with the tire walls more often
d)
air molecules diffuse rapidly through the walls of the tire.
26.

A gas is under 750 mm Hg of pressure. What is the pressure in Atmospheres?

a)

1.013 atm

b)

0.987 atm

c)

760 atm

d)

0.0013 atm

27.

A sample of H2 (g) and a sample of N2 (g) at the same temperature and pressure contain the same number of molecules. Each sample must have

a)

the same volume, but a different mass

b)

the same mass, but a different volume

c)

both the same volume and the same mass

d)

neither the same volume nor the same mass

28.

What formula would you use to solve the following: If a cylinder has a volume of 5.4 x 106 L of air at a pressure of 840 Torr and it is determined that there are 3.0 x 105 moles of CO2 present, calculate the temperature inside the cylinder.

a)
b)
c)
d)
29.

A weather balloon has a volume of 105L at 0.97 atm when the temperature is 318K. What is the volume at 293K and 1.05 atm?

a)

89.4 L

b)

0.32 L

c)

93.8 L

d)

3.13 L

30.

STP conditions for temperature, pressure and volume are:

a)

1 atm, 0 K, 22.4 L

b)

1 atm, 273 K, 22.4 L

c)

0 atm, 273 K, 6.02 x 1023 Liters

d)

1 atm, 273 K, 6.02 x 1023 Liters

31.

You build a snowy snowman to a volume 323 mL of snow with a density of 0.670 g/mL. How much liquid water will result when the snowman melts down?

a)

482 mL

b)

0.00207 mL

c)

216 mL

d)

245 mL

32.

Place equally massed samples of rain, ice, and snow (0.50 g/mL) in order of decreasing volume (separate each with a comma in your answer).

(a)  

33.

When you increase your depth under water, the water pressure on your body and the items around you

a)

increases

b)

decreases

c)

stays the same

34.

Given equal masses, which of these substances occupies the GREATEST volume?

a)

Aluminum

(2.70 g/mL)

b)

Cobalt (8.86 g/mL)

c)

Plutonium

(19.7 g/mL)

d)

Managanese

(7.33 g/mL)

35.

If the volume of a gas is halved while the pressure remains constant, what change (if any) would be observed in the temperature?

a)

Temperature would double

b)

Temperature would be halved

c)

Temperature would remain constant

d)

Not enough information to determine

36.

When sublimation occurs, what is the change in the state of matter?

a)

Gas to liquid

b)

Gas to solid

c)

Solid to gas

d)

Solid to liquid

37.

You fill your 40.0 ounce Stanley with ice. If the ice in the Stanley completly melts down, how much liquid water would result?

a)

1,740 ounces

b)

40.0 ounces

c)

43.5 ounces

d)

36.8 ounces

38.

Which has more particles, a balloon filled with 20 Liters of Hydrogen gas, H2, or  balloon filled with 15 Liters of Nitrogen gas, N2

(assume STP)?

a)

20 Liters if H2 has more particles.

b)

15 Liters if H2 has more particles

c)

They have an equal amount of particles

d)

Not enough information to determine

39.

If 33.00 moles of krypton gas occupies a volume of 288.0 Liters, what volume will 71.00 moles of krypton occupy at the same temperature and pressure?

a)

133.8 Liters

b)

619.6 Liters

c)

8.135 Liters

d)

314.5 Liters

40.

One mole of an ideal gas is held at standard conditions. At what Kelvin temperature would the pressure be doubled?

a)

6.02 x 1023 Kelvin

b)

22.4 Kelvin

c)

546 Kelvin

d)

273 Kelvin

41.

According to Avogadros Law, 22.4 Liters of 02(g) and 22.4 Liters of F2(g) at the same temperature and pressure __________.

a)

have unequal volumes

b)

have the same density

c)

contain 1 mol of gas each

d)

have the same mass

42.

Calculate the molar mass of Oxygen gas.

a)

16.0 g/mol

b)

32.0 g/mol

c)

8.00 g/mol

d)

64.0 g/mol

43.

Of the 3 temperature scales used in class, which has the smallest degree change?

a)

Celsius

b)

Kelvin

c)

Fahrenheit

44.

Arsenic has a density of 5.7g/ml. The mass of Arsenic was 7.8g and it was found at the crime scene. Determine the volume of Arsenic.

a)

1.4 mL

b)

.73 mL

c)

44 mL

d)

2.1 mL

45.

A 185 pound male must drink at least 2,809 mL of fluid per day. How many liters of fluid is this?

a)

28.09 Liters

b)

2.809 Liters

c)

0.2809 Liters

d)

280,900 Liters

46.

You have a 1.00 mole sample of Fluorine gas at STP. Calculate the number density (n/V) of this gas sample.

a)

0.0446 mol/L

b)

6.02 x 1023 mol/L

c)

22.4 mol/L

d)

0.992 mol/L

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