Pressure Conversions and Gas Laws worksheet
1. Convert .98 atm to mm of Hg
2. Convert 1.2 atm to kPa
2. Conver t 778 torr to atm
3. Conver t 32 psi to atm and kPa
Boyle’s Law
3. The pressure in a 4.00 L tire is increased from 230 mm Hg to 400 mm Hg. What is the new volume?
4. A balloon at 1.50 atm holds 600. mL of air. What volume would it hold if the weather changes and the pressure
drops to 755 mm Hg?
Charles’ Law
5. The volume of a tire on a race car is 6000. cm3 at a temperature of 25oC. As the race proceeds, the day gets
warmer and the temperature rises to 30.oC. Pressure does not change. What will be the volume of the tire later
in the day?
6. The same tire above (6000. cm3) inflates to 8500 cm3 at a temperature of 35oC. What was the original
temperature of the tire? Pressure is still the same.
Gay-Lussac’s Law
7. Pressure inside a jelly jar before it is sealed is equal to the room pressure of 1.75 atm at 25oC. After the jar is
placed in hot water at 100.oC a vacuum forms. What is the new pressure inside the jar?
8. Calculate the temperature of a jar with a pressure of 780 mm Hg if the pressure was 408 mm Hg at 285K.
Combined Gas Law
9. A weather balloon starts out on the ground at a temperature of 310 K and holds 6.5 L of air with a pressure of 4
atm. As the weather balloon rises into the atmosphere, the temperature drops to 260 K and the pressure drops
to 1.0 atm. What volume of air does the balloon hold?
More Combined Gas Law!!
Show conversions of pressure, volume and temperature where necessary BEFORE solving for the unknown.
P1
1.5 atm
V1
3.0 L
T1
20.oC
720 torr
25 6mL
25oC
600. mm Hg
2.5 L
22oC
760 mm Hg
1.8 L
750 mL
0.0oC
2.0 atm
500. mL
25oC
101 kPa
6.0 L
198oC
900. torr
225 mL
150.oC
2.5 L
30.oC
100. mL
75oC
95 kPa
4.0 L
100.oC
650. torr
850 mm Hg
1.5 L
125 kPa
125 mL
P2
2.5 atm
15oC
100. kPa
V2
T2
30.oC
250 mL
50.oC
Apply the appropriate law and solve the problems.
A balloon contains 5.3 L of helium gas when the temperature is 12oC. Assuming pressure remains constant, at what
temperature will the volume increase to 6.0 L?
While flying in an airplane, you drink a bottle of water. After emptying the 500. mL bottle, you replace the cap. The
airplane cabin is pressurized and the temperature is 23oC. When the plane landed, the outside temperature was 17oC
and the atmospheric pressure was 99.4 kPa. What happened to your empty bottle? (Don’t tell me you gave it to the
flight attendant.) What was the pressure in the cabin before it started its descent to land if the volume of the bottle on
land was 387 mL?
A sample of compressed methane gas has a volume of 648 mL at a pressure of 503 kPa. To what pressure would the gas
have to be compressed in order to have a volume of 216 mL?
A student collects a 125.0 mL sample of hydrogen gas. Later, the sample is found to have a volume of 128.6 mL at a
temperature of 26oC. At what temperature was the hydrogen collected?