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WorksheetsGases
Total questions: 13
Worksheet time: 28mins
Name
Class
Date
1.
Which of the following is NOT a part of Kinetic Molecular Theory?
a)
Gas particles have mass and occupy space (the individual particles have volume)
b)
Gas particles do not have mass and occupy space (the individual particles have volume
c)
Gas particles move in straight lines
d)
The more heat energy the gas particles have, the faster they move
2.
Diffusion is
a)
the ability of one gas to mix with another gas.
b)
the rate at which a gas flows through the air.
c)
an explosion of gases.
d)
the ability of a gas to move from a high pressure to a low pressure.
3.
Calculate the relative ratio of the rates of effusion (diffusion) of oxygen to nitrogen. Remember to use the equation for Dalton's Law...
a)
4.00
b)
1.07
c)
3.74
d)
0.94
4.
At a constant pressure, the volume decreases. What happens to the temperature?
a)
increases
b)
decreases
c)
stays the same
5.
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
6.
At a constant temperature, pressure increases. What happens to the volume?
a)
increases
b)
decreases
c)
stays the same
7.
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
8.
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
9.
How many molecules are there in a 110 L sample of gas at STP?
a)
8 x 1023 molecules
b)
8 x 1024 molecules
c)
3 x 1024 molecules
d)
3 x 1023 molecules
10.
A sample of pure oxygen gas at STP measures out to be 2.00 L. How many moles of oxygen is this?
a)
24.4 mol
b)
0.007 mol
c)
1.44 mol
d)
0.09 mol
11.
Gases of the same volume contain the same number of molecules. This is the description of:
a)
Boyle's law
b)
Dalton's law
c)
Charles' law
d)
Avogadro's law
12.
A sample of carbon dioxide at STP is 0.50 L. How many grams of carbon dioxide do we have?
a)
0.48 g
b)
0.49 g
c)
1.96 g
d)
0.98 g
13.
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)
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
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