1. P1V1 = P2V2 (99.0 kPa) (300.0 mL) = (188 kPa) V2
1. The volume of a gas at 99.0 kPa is mL. If the pressure is
increased to 188 kPa, what will be the new volume?
P1V1 = P2V2
(99.0 kPa) (300.0 mL) = (188 kPa) V2
(99.0 kPa) (300.0 mL) = V2
(188 kPa)
V2 = 158 mL

2. 2. The pressure of a sample of Helium in a 1.00 L container is
0.988 atm. What is the new pressure if the sample is placed in
a 2.00 L container?
P1V1 = P2V2
(0.988 atm) (1.00 L) = P2 (2.00 L)
(0.988 atm) (1.00 L) = P2
(2.00 L)
P2 = atm

3. 4. What volume will the gas in the balloon at the right occupy at 250 K?
V1 = V2
T1 T2
4.3 L = V2 V2 = 3.1 L
350 K K

4. 5. A gas at 89 oC occupies a volume of 0.67 L. At what Celsius
temperature will the volume increase to 1.12 L?
V1 = V2
T1 T2
0.67 L = L
362 K T2 T2 = 605 K = 330 oC

5. 6. The Celsius temperature of a 3.00 L sample of gas is lowered from
80.0 oC to 30.0 oC. What will be the resulting volume of this gas?
V1 = V2
T1 T2
3.00 L = V2 V2 = 2.58 L
353 K K

6. 8. The pressure in an automobile tire is 1.88 atm at 25.0 oC. What is
the pressure if the temperature increases to 37.0 oC?
P1 = P2
T1 T2
1.88 atm = P2 P2 = 1.96 atm
298 K K

7. P1 = P2 T1 T2 1.12 atm = 2.56 atm T1 = 136 K T1 310. K = - 137 oC
9. Helium gas in a 2.00 L cylinder is under 1.12 atm of pressure. At
36.5 oC that same gas sample has a pressure of 2.56 atm. What was
the initial temperature of the gas in the cylinder?
P1 = P2
T1 T2
1.12 atm = 2.56 atm T1 = 136 K
T K = oC

8. P1V1 = P2V2 T1 T2 1.02 atm * V1 = 1.23 atm * 0.224 ml 295 K 373 K
11. A sample of air in a syringe exerts a pressure of 1.02 atm at 22.0 oC.
The syringe is placed in a boiling-water bath at oC. The
pressure is increased to 1.23 atm by pushing the plunger in, which
reduces the volume to ml. What was the initial volume?
P1V1 = P2V2
T T2
1.02 atm * V1 = atm * ml
295 K K
V1 = ml

9. P1V1 = P2V2 T1 T2 1.30 atm * 146.0 mL = 2.60 atm * V2 278 K 275 K
12. A balloon contains mL of gas confined at a pressure of 1.30
atm and a temperature of 5.0 oC. If the pressure doubles and the
temperature decreases to 2.0 oC, what will be the volume of gas in
the balloon?
P1V1 = P2V2
T T2
1.30 atm * mL = atm * V2
278 K K
V2 = 72.2 mL