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The Kinetic Theory of gases assumes five things: Gas particles do not repel or attract each other, they are smaller than the distances between them, they are in constant, random motion, no kinetic energy is lost when gas particles collide, and all gases have the same average kinetic energy in a given temperature. Actual gases do not obey all of these assumptions, but their behavior does approximate them. The assumptions themselves are based on the temperature, volume and pressure of the gas sample. The interdependence of these three variables is the basis for the following gas laws. Boyle's Law relates pressure and volume, keeping temperature constant: P1V1=P2V2. Charles' Law relates volume and temperature, keeping the pressure constant: V1/T1 = V2/T2. Gay-Lussac's Law relates pressure and temperature, keeping volume constant: P1/T1=P2/T2. This quiz will cover basic gas law problems. You will need a calculator. Select the best answer from the choices.
Boyle's Law: P1V1=P2V2 The volume of a gas at 99.0 kPa is 300mL. If the pressure increases to 188kPa, what is the final volume?
342 mL
158mL
150 mL
78 mL
Boyle's Law: P1V1=P2V2 The pressure of a sample of helium in a 1L container is .988 atm. What is the new pressure if the sample is placed in a 2L container?
0.494 atm
1.564 atm
2.098 atm
3.45 atm
Charles' Law: V1/T1 = V2/T2 A gas at 89 degrees C occupies a volume of .67L. At what temperature will the volume increase to 1.12L?
67 degrees C
330 degrees C
23 degrees C
198 degrees C
Boyle's Law: P1V1=P2V2. A sample of neon gas occupies .220L at .860 atm. What will be the volume at 29.2 kPa?
.8973L
1.234L
.0657L
.454L
Charles' Law: V1/T1 = V2/T2 The Celsius temperature of a 3.00L sample of gas is lowered from 80.0 C to 30.0 C. What is the final volume?
0.987L
1L
3L
2.58L
Having had his head squished, your brother’s head now expands and contracts when the outside conditions change. If your brother’s head has a volume of 1.50 L at a temperature of 15 degrees Celsius, what volume will his head have if he goes to Riyadh, Saudi Arabia when the temperature is 43 degrees Celsius?
1.09L
3.28L
1.65L
2L
At 1.00 atm of pressure, your idiot brother’s empty head has a volume of 1.50 liters. If you hire a fat guy to sit on his head with a pressure of 4.50 atm, what will the volume of his head become?
0.933L
0.333L
0.908L
1.345L
True or False, All gases generally show similar behavior when the conditions are normal. But with a slight change in physical conditions like pressure, temperature or volume these show a deviation.
True
False
