# The Gas Law Quiz: Chemistry Trivia!

29 Questions | Attempts: 1091  Settings  .

• 1.
Which law compares gases at two different sets of conditions, with temperature as a constant and pressure and volume as variables?
• A.

Charle's Law

• B.

Boyle's Law

• C.

Combined Gas Law

• D.

Ideal gas law

• 2.
If the pressure of a gas is 1.2 atmospheres with a volume of 12 L, how much pressure is exerted by the gas if the volume is changed to 9L? (Assume constant temperature)
• A.

.9 L

• B.

129.6 L

• C.

6.0 L

• D.

1.6 L

• 3.
If the pressure of a gas is 103.2 kPa at a temperature of 100 Celsius and a volume of 4L is changed to a lower pressure of 80 kPa and 100 degrees celsius, what will be the new volume? (Hint: kPa is kilo pascals -- a unit of measure for pressure).
• A.

2,064 L

• B.

0.3225 L

• C.

5.16 L

• D.

3.1 L

• 4.
A gas at a temperature of 80Celsius and a volume of 3.2 Liters is brought into an area with a temperature of 100 Celsius, what is the new volume if the pressure remains constant? Hint 1: This is Charles law (V1/T1 = V2/T2) Hint 2: ALL GAS PROBLEMS MUST use the KELVIN temperature scale. (To change from Celsius to Kelvin: add 273)
• A.

3.38 L

• B.

2.84 L

• C.

3.75 L

• D.

2.4 L

• 5.
A gas at a temperature of 34 Celsius and a volume of 6.3  Liters is brought into a new area where the gas expands to a volume of 8.0 Liters. What is the new temperature? (Assume constant Pressure)
• A.

43.17 K

• B.

389.84 K

• C.

0.164 K

• D.

1.48 K

• 6.
A gas in a balloon measures 2.2 L, 1.1 atmospheres, and 32 degrees Celsius. The environment is changed and the balloon is now 1.8 L and 1.4 atmospheres. What is the new temperature? Hint 1: Always change the temperature to the Kelvin scale. Hint 2: Pressure, volume, and temperature are all changed. Use the combined gas law:
• A.

317.6 K

• B.

33.32 K

• C.

384.3 K

• D.

0.02 K

• 7.
A gas in a balloon measures 3.6 L, 0.9 atmospheres, and 34 degrees Celsius. The environment is changed and the balloon is now 1.4 atmospheres at a temperature of 38 degrees Celsius. What is the new volume?
• A.

2.59 L

• B.

4.6 L

• C.

220,961 L

• D.

2.34 L

• 8.
What is the volume of  2 moles of Helium at a temperature of 32 degrees Celsius and a pressure of 1.1 atmospheres? Given R = 0.08321 Latm/molK  and 8.314 kPa L/mol K Hint: There is only 1 set of conditions for this gas problem and the moles of the gas is given. This indicates the ideal gas law: PV = nRT.  Remember that is equal to the number of moles. P is the pressure, V is the volume and T is the temperature (change to Kelvin). The R MUST match the units in the rest of the problem.  IF pressure is given in atmosphere, then use R = 0.08321 Latm/molK . IF pressure was given in kPa, then use 8.314 Kpa L/mol K Note also that volume MUST be in Liters and Temperature (as for all gas problems) must be in Kelvin.
• A.

13.96 L

• B.

.45 L

• C.

46.14 L

• D.

4,610 L

• 9.
What is the temperature of  3.4 moles of Helium at a  pressure of 1.1 atmospheres and a volume of 3.7 Liters? (What is the temperature in Kelvin?) Given R = 0.08321 Latm/molK  and 8.314 kPa L/mol K
• A.

14.39 K

• B.

12.15 K

• C.

0.1 K

• D.

142 K

• 10.
How many moles are present in a container that is 79.9 Liters with a pressure of 105 kPa and a temperature of 24 degrees Celsius? Given R = 0.08321 Latm/molK  and 8.314 kPa L/mol K
• A.

2.7 moles

• B.

271 moles

• C.

3.4 moles

• D.

5.6 moles

• 11.
According to Charles Law, if you have a balloon inside a car at noon  during a hot summer day the balloon molecules inside will increase in pressure.
• A.

True

• B.

False

• 12.
In a nitrogen gas occupies has a volume of 500ml at a pressure of 0.971atm.What volume will the gas occupy at a pressure of 1.50 atm, assuming the temperature remains constant?
• A.

342mL

• B.

424mL

• C.

324mL

• D.

442mL

• E.

242mL

• 13.
Not all Gas Law problems have Kelvin (K) as the unit of temperature. They can be expressed in Celsius (°C)and Fahrenheit(°F). So convert 123°C to K.
• A.

396K

• B.

486K

• C.

369K

• D.

458K

• E.

693K

• 14.
Gas pressure is caused by
• A.

Gas molecules heating up

• B.

Gas molecules reacting with other gas molecules

• C.

Gas molecules hitting the walls of a container

• D.

Gas molecules hitting other gas molecules

• 15.
At a pressure of 5.0 atmospheres, a sample of gas occupies 40. liters. What volume will the same sample occupy at 1.0 atmosphere?
• A.

0.0050 L

• B.

0.13 L

• C.

200 L

• D.

8.0 L

• 16.
As the volume of confined gad decreases at a constant temperature, the pressure exerted by the gas ______
• A.

Decreases

• B.

Increases

• C.

Stay the same

• D.

Fluctuates

• 17.
1.    A sample of argon has a volume of 0.43 mL at 299K. At what temperature in degrees Celsius will it have a volume of 1 mL.
• A.

695°C

• B.

422°C

• C.

428°C

• D.

694°C

• 18.
Each of these flasks contains the same number of molecules. In which container is the pressure highest?
• A.

• B.

• C.

• D.

• E.

• 19.
Why would the pressure of a sample of gas at a constant volume fall 75 mmHg?
• A.

The container exploded

• B.

The temperature increased

• C.

The temperature decreased

• D.

Fewer particles were present

• 20.
If two moving steel balls collide, their total energy after the collision is the same as before.  This is an example of
• A.

Boyle's law

• B.

The law of gravity

• C.

An elastic collision

• D.

Both Boyle's and Charles's law.

• 21.
A sample of oxygen occupies 560. mL when the pressure is 800.00 mmHg.  At constant temperature, what volume does the gas occupy when the pressure decreases to 700.0 mmHg?
• A.

80.0 mL

• B.

490. mL

• C.

600. mL

• D.

640. mL

• 22.
What pressure (atm) is exerted by .750 mol of a gas at a temperature of 273 K and a volume of 5.00 L?
• A.

2.1 atm

• B.

3.4 atm

• C.

4.98 atm

• D.

760 atm

• 23.
A sample of gas at 25ºC has a volume of 11 L and exerts a pressure of 660 mmHg.  How many moles of the gas are in the sample?
• A.

.39 mol

• B.

3.9 mol

• C.

9.3 mol

• D.

87 mol

• 24.
The pressure is the force per unit.
• A.

Volume

• B.

Area

• C.

Length

• D.

Depth

• 25.
A 180.0 mL volume of gas is measured at 87ºC.  If the pressure remains unchanged, what is the volume of the gas at standard temperature?
• A.

0.0 mL

• B.

0.5 mL

• C.

137 mL

• D.

410 mL

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