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Worksheets

Gases

Total questions: 24

Worksheet time: 24mins

Name
Class
Date
1.
A 7.00 L sample of argon gas at 420. K exerts a pressure of 625 kPa.  If the gas is compressed to 1.25 L and the temperature is lowered to 350 K, what will be its new pressure in atm?
a)
10.4 atm
b)
2920 atm
c)
2916.7 atm
d)
28.8 atm
2.
How many grams of N2O5 gas  are in a sample that has a volume of 2.00 Liters at 298 K and 100. kPa of pressure.  
a)
8.72 grams
b)
0.0807 grams
c)
12.3 grams
d)
883 grams
3.
At a constant temperature, the volume decreases.  What happens to the pressure?
a)
increases
b)
decreases
c)
stays the same
4.
At a constant volume, the pressure increases.  What happens to the temperature?
a)
increases
b)
decreases
c)
stays the same
5.
At a constant pressure, the volume decreases.  What happens to the temperature?
a)
increases
b)
decreases
c)
stays the same
6.
Under which of the following conditions do REAL gases behave most like IDEAL gases?
a)
High pressure and high temperature
b)
High pressure and low temperature
c)
Low pressure and low temperature
d)
Low pressure and high temperature
7.

Which of the following is NOT a part of kinetic molecular theory?

a)

Gases do not have mass

b)

Gases do not have volume

c)

Gases have elastic collisions

d)

Gases move in constant, random, straight lines

8.

What is the most ideal gas?

a)

Helium

b)

Hydrogen

c)

Oxygen

d)

Water

9.

What is the mathematical relationship between pressure and volume?

a)

Inverse

b)

Direct

c)

No relationship

d)

Variable

10.

What is the mathematical relationship between pressure and temperature?

a)

Inverse

b)

Direct

c)

No relationship

d)

Variable

11.

What is the mathematical relationship between volume and temperature?

a)

Inverse

b)

Direct

c)

No relationship

d)

Variable

12.

Which variables does Boyle's Law have?

a)

Pressure

b)

Volume

c)

Temperature

d)

Moles

13.

Which variables does Charles' Law have?

a)

Pressure

b)

Volume

c)

Temperature

d)

Moles

14.

Which variables does Gay-Lusacc's Law have?

a)

Pressure

b)

Volume

c)

Temperature

d)

Moles

15.

Which variables does Avogadro's Principle have?

a)

Pressure

b)

Volume

c)

Temperature

d)

Moles

16.

Which of the following pressures is NOT the same value?

a)

14.7 psi

b)

1 atm

c)

101.325 torr

d)

760 mm Hg

17.

What does the R stand for in PV=nRT?

a)

Ideal Gas Constant

b)

Mass

c)

Recoil

d)

Energy

18.

What does Graham's Law describe?

a)

The relationship between the molar mass of a gas and its velocity

b)

The sum of pressures adds up to total pressure

c)

Why diffusion occurs

d)

Whether a gas is ideal or not

19.

What is the two differences between real and ideal gases?

a)

Real gases have mass and inelastic collisions

b)

Real gases take up space and have attraction

c)

Real gases take up space and have mass

d)

Real gases take up space and have inelastic collisions

20.

What is diffusion?

a)

The random spread of gases throughout a space

b)

Gases slowly getting through small openings in containers

c)

Gases separating based on mass

d)

Liquids becoming gases

21.

What is effusion?

a)

The random spread of gases throughout a space

b)

Gases slowly getting through small openings in containers

c)

Gases separating based on mass

d)

Liquids becoming gases

22.
At STP (Standard Temperature and Pressure), a gas has a volume of 3.0 L. What is the new volume if the pressure increases to 303.9 kPa? The equation that you need use is the Combined Gas Law.
a)
9 L
b)
1 L
c)
9 kPa
d)
1 kPa
23.
A gas has a volume of 22.4 L at STP.  What is the new volume if the pressure is increased to 202.6 kPa and the temperature is decreased to 250 K? You will need to use the combined gas law for this question.
a)
10.3 L
b)
24.5 L
c)
48.9 L
d)
20.6 L
24.
A sample of O2 gas has a volume of 2.0 L, a Temperature of 298 K, and a pressure of 100 kP. How many grams of oxygen is this? Remember:
R = 8.314 L*kPa/(K * mole)
a)
2.58 grams of O2
b)
0.081 grams of O2
c)
6.022 grams of O2
d)
22.4 grams of O2