Free Printable Unit 6 Gases Review

Worksheets

Unit 6 Gases Review

Total questions: 27

Worksheet time: 28mins

Name

Class

Date

The gas in the container is at a pressure of 3.00 atm at 298 K. What would be the pressure in the container at 325 K?

P1/T1 = P2/T2

P1V1 = P2V2

V1/T1 = V2/T2

PV = nRT

What is 50 ⁰C in Kelvin?

223 K

323 K

100 K

50 K

If a beach ball has a volume of 261 L at a temperature of 502 K, what will be the new temperature of the balloon if the volume decreases to 176 L and the pressure remain constant?

744 K

0.0030 K

339 K

512 K

HONORS ONLY: A sample of carbon dioxide at STP is 0.50 L. How many grams of carbon dioxide do we have?

0.48 g

0.49 g

1.96 g

0.98 g

If 3.25 mol of Ar occupies 100. L at a particular temp and pressure, what volume does 14.15 mol of Ar occupy under same condition?

435 L

225 L

100 L

522 L

A gas occupies 4.98 L at 2.6 atm of pressure. What volume does it occupy at 1.8 atm pressure?

12.9 L

0.72 L

7.2 L

3.44 L

The pressure on a sample of gas is increased from 1.0 atm to 3.0 atm. If the new volume is 0.52 L, find the original volume.

0.52 L

1.56 L

0.173 L

1.00 L

Tom Brady enjoys balloon animals from the carnival. He just received a balloon giraffe that has an initial temperature of 39.0°C and a volume of 1.28 L. If Gronkowski plays a trick on Tom, and puts his balloon giraffe into the freezer, what would be the new volume of the balloon if the temperature drops down to 8.0°C?
(Don’t forget about what must be done to temperatures!)

1.42 L

6.85 x 10⁴ L

3.78 L

1.15 L

Which of the following is NOT a value for standard pressure?

101.3 kPa

760 mm Hg

1 atm

1 torr

10.

What is standard temperature?

0^oC

173 K

173.15 K

11.

Pressure is

defined as the mass that an object exerts when at rest.

not a measurable in gases.

defined as the number of moles of substance divided by the mass of the substance.

created by the force of the gas particles impacting the walls of the container.

12.

What type of relationship is shown between these two variables

A logarithmic relationship

A direct relationship

An indirect relationship

There is no relationship

13.

Dalton's Law states...

that at a constant temperature the volume of a confined ideal gas varies inversely with its pressure.

that the total pressure exerted by the mixture of non-reactive gases is equal to the sum of the partial pressures of individual gases

how gases tend to expand when heated

that the density of an ideal gas at constant pressure varies inversely with the absolute temperature of the gas.

14.

Three gases, Ar, N2 and H2 are mixed in a 500L container. Ar has a pressure of 255 torr, N2 has a pressure of 228torr and H2 has pressure of 752torr. What is the total pressure in the container?

483torr

270torr

1235torr

15.

HONORS ONLY: A mixture of hydrogen, nitrogen, and water vapor has a total pressure of 864 mmHg. The partial pressure of hydrogen is 220 mmHg and that of nitrogen is 410 mmHg. What is the partial pressure of water vapor?

234 mmHg

1.37 mmHg

2.64 mmHg

1, 494 mmHg

16.

HONORS ONLY: A container holds a mixture of two different gases. The oxygen in a container exerts 80 mmHg of pressure on the inside of the container. The total pressure inside the container is 120 mmHg. What is the pressure of the other gas in the container?

200 mmHg

80 mmHg

40 mmHg

120 mmHg

17.

Lighter gases have a ________________ rate of effusion.

faster

slower

rate of effusion does not depend on mass.

18.

Which of the following would have a faster rate of effusion: 15g of Kr or 15g of N₂?

Kyrpton

Nitrogen

Both would have the same rate of effusion

19.

why would O₂ effuse faster than CO₂ in the same room

because O₂ has more energy

because CO₂ has a greater molar mass

because oxygen has a higher temperature

they will effuse the same because the temperature is fixed

20.

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

7.18 L

7.81 L

4.63 L

4.36 L

21.

What does R stand for

Ideal gas constant

Real gas constant

Temperature constant

Ideal gas law

22.

Which is a correct unit for R?

L.atm/mol.k

L.atm

mmHg/mol.K

L.atom/mol

23.

If I initially have 4.0 L of a gas at a pressure of 1.1 atm, what will the volume be if I increase the pressure to 3.4 atm?

1.29 L

12.36 L

1.29 atm

12.36 atm

24.

A sample of sulfur dioxide occupies a volume of 652 mL at 313 K and 150 kPa. What volume will the sulfur dioxide occupy at STP?

STP = 273 K, 101.3 kPa

1682.6 mL

20.7 mL

492.3 mL

842.1 mL

25.

The more energy that particles have, the ___ they move.

slower

faster

26.

Collisions in which particles transfer all their kinetic energy to other particles are called ___.

elastic

inelastic

27.

Which one of these is NOT an Ideal Gas Assumption?

Gas particles are hard, round spheres.

Gas particles are strongly attracted to one another.

Gas particles do not take up space.

Gas particles collide perfectly elastically.

100 %

Unit 6 Gases Review

Total questions: 27

Worksheet time: 28mins

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