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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
x 1000
D
- 273
2) The SI unit for temperature is
A
Farenheight
B
Kelvin
C
Celsius
D
Bananas
3) STP stands for
A
Standard temperature and pressure. 0 degrees Kelvin and 1 atm
B
Standard temperature and pressure. 0 degrees celsius and 1 atm.
C
Standard temperature and pressure. 100 degrees celsius and 10 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
10 mL
C
10 L
D
1.0 L
5) Pressure and Volume and inversely related. This means that
A
As pressure goes down, volume goes up
B
as volume goes down, temperature goes up
C
as pressure goes down volume goes down
D
as pressure goes up volume goes up
6) A mole of gas occupies ________L at STP
A
224 L
B
22.4 mL
C
224 mL
D
22.4 L
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 volume stays the same
D
the pressure is cut in half
8) Determine the mass in grams of 5.8 L of Helium gas (He)
A
0.0647 g He
B
519 g He
C
4.00 g He
D
1.06 g He
9) If you are given pressure, temperature, and volume in a problem, which gas law do you use?
A
Combined
B
Boyle's
C
Gay-Lussac's
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 L
B
0.25 mL
C
1 L
D
0.5 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
30 atm
B
20 atm
C
2.5 atm
D
13.3 atm
12) What size container would 5.5 grams of Argon (Ar) need at STP?
A
3.08 mL
B
3.08 L
C
6.14 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
700 Celsius
B
700 K
C
1
D
175 K
14) Pressure and Temperature are
A
directly proportional (directly related)
B
the same
C
inversely related
D
measured by kPa
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
215 K
B
negative 215 K
C
58.3 celsius
D
negative 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 number for Kelvin or Celsius
B
True
C
False. You cannot have a negative Kelvin number, but you can have a negative Celsius number
D
False, you cannot have a negative number for Celsius, but you can have a negative number for Kelvin
17) If you increase temperature, what happens to pressure?
A
It decreases
B
it does not change
C
It increases
D
It doubles
18) Which statement DOES NOT describe an Ideal Gas
A
Particles take up no space
B
Has no intermolecular attractive forces
C
Particles take up space
D
In constant, random motion
19) Real gases do not behave like ideal gases under which conditions?
A
extremely high volumes
B
extremely high pressure and extremely low temperatures
C
Very low pressure
D
extremely high temperatures and extremely low pressures
20) Absolute Zero, or Zero Kelvin, describes a theoretical temperature at which
A
kinetic energy disappears
B
particles move quickly
C
potential energy disappears
D
particles stop moving
*select an answer for all questions
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