Step 1 List the Information

Boyle’s Law

P1V1 = P2V2

1.  A helium balloon is inflated to a volume 13.0L at a pressure of 3 atm. What is the new volume if the pressure is lowered?

Step 1 List the information

P1= P2=

V1= V2=

Step 2 Write down the formula

Step 3 Plug the numbers into the formula

Step 4 Report the answer

2.  What are the values for the temperature and pressure at STP?

Pressure= atm or mmHg

Temperature= oC or Kelvin

3.  Why is gas easy to compress?

4.  List three factors that can affect gas pressure?

5.  Why does a collision with an air bag cause less damage than the collision with a steering wheel?

In order to receive credit you must include units and show your work.

6.  600mL of gas at l atm is expanded to 900mL. What will the pressure be?

7.  1.5L of gas is under 780torr pressure. The pressure is increased to 1000torr. What will the new volume be?

8.  500mL of gas are at 1atm. The pressure is increased to 80 atm. What will the new volume be?

9.  A gas with a volume of four liters at 1 atm expands until the pressure drops to 0.2 atm, what is the new volume if the temperature does not change?

10.  A sample of a gas has a volume of 320 mL when measured at 760 mmHg. The pressure is decreased to 420 mm Hg while maintaining constant temperature conditions. What is the new volume?

11.  A gas has a volume 310 mL at STP. Calculate the new pressure in atmospheres if the volume is reduced to 280 mL. (Hint at STP tells you the starting pressure)

12.  A sample of a gas occupies 4.5L when measured at 3.5 atm. If the pressure is decreased to 0.50 atm, what is the new volume?