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Chm 1 Gases Unit Test Review
Test Description: Molar volume combined gas law Boyles Charles Gay-Lussacs Ideal Gases Behavior
Instructions: Answer all questions to get your test result.
1) How do you convert from Celsius to Kelvin?
A
x 273
B
- 273
C
+ 273
D
x 1000
2) The SI unit for temperature is
A
Farenheight
B
Celsius
C
Bananas
D
Kelvin
3) STP stands for
A
Standard temperature and pressure. 0 degrees Kelvin and 1 atm
B
Standard temperature and pressure. 100 degrees celsius and 10 atm
C
Standard temperature and pressure. 0 degrees celsius and 1 atm.
D
Standard testing and pressure. 0 degrees Kelvin and 1 atm
4) Which of the following is the largest volume
A
100 mL
B
1.0 L
C
10 mL
D
10 L
5) Pressure and Volume and inversely related. This means that
A
as pressure goes up volume goes up
B
As pressure goes down, volume goes up
C
as volume goes down, temperature goes up
D
as pressure goes down volume goes down
6) A mole of gas occupies ________L at STP
A
22.4 L
B
224 mL
C
224 L
D
22.4 mL
7) If you double the temperature of a gas, what will happen to the volume of the same gas? (assuming pressure is kept constant)
A
the volume doubles
B
the volume is cut in half
C
the pressure is cut in half
D
the volume stays the same
8) Determine the mass in grams of 5.8 L of Helium gas (He)
A
4.00 g He
B
1.06 g He
C
519 g He
D
0.0647 g He
9) If you are given pressure, temperature, and volume in a problem, which gas law do you use?
A
Boyle's
B
Gay-Lussac's
C
Combined
D
Charles
10) The volume of a gas is 0.50 L at 1 atm and at 400 K. If the temperature is decreased by half and the pressure stays the same, what is the new volume?
A
0.25 mL
B
0.5 L
C
1 L
D
0.25 L
11) A gas occupies 4.0 L of space at 5.0 atm. What would the pressure be if the new volume was 1.5 L?
A
2.5 atm
B
20 atm
C
30 atm
D
13.3 atm
12) What size container would 5.5 grams of Argon (Ar) need at STP?
A
3.08 L
B
6.14 mL
C
3.08 mL
D
0.00614 L
13) At 350 K a gas is at a pressure of 8.0 kPa. If the pressure is doubled, what is the new temperature?
A
1
B
175 K
C
700 Celsius
D
700 K
14) Pressure and Temperature are
A
inversely related
B
measured by kPa
C
directly proportional (directly related)
D
the same
15) at 50 degrees celsius a gas occupies a volume of 3.0 L. If the volume is decreased to 2.0 L, what is the new temperature in degrees celsius?
A
negative 58.3 celsius
B
negative 215 K
C
215 K
D
58.3 celsius
16) True or False: You can have negative numbers for temperature using Kelvin and Celsius scales
A
False. You cannot have a negative Kelvin number, but you can have a negative Celsius number
B
False, you cannot have a negative number for Celsius, but you can have a negative number for Kelvin
C
True
D
False. You cannot have a negative number for Kelvin or Celsius
17) If you increase temperature, what happens to pressure?
A
it does not change
B
It increases
C
It doubles
D
It decreases
18) Which statement DOES NOT describe an Ideal Gas
A
Particles take up no space
B
Has no intermolecular attractive forces
C
In constant, random motion
D
Particles take up space
19) Real gases do not behave like ideal gases under which conditions?
A
Very low pressure
B
extremely high volumes
C
extremely high pressure and extremely low temperatures
D
extremely high temperatures and extremely low pressures
20) Absolute Zero, or Zero Kelvin, describes a theoretical temperature at which
A
particles stop moving
B
particles move quickly
C
kinetic energy disappears
D
potential energy disappears
*select an answer for all questions
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