Outline an example of decreasing the gas pressure in an inflated balloon by placing it in ice water. Elicit the effect on the volume of the gas, and on the volume of the balloon. Elicit the pressure changes which would occur if a given volume of a gas was compressed into half then a quarter of its volume. Graph the results of a volume vs pressure experiment, and describe the inverse proportion seen. State Boyle's law based on the results.
State Boyle's law as a mathematical expression P1xV1=P2xV2.
Set up a practice problem in which a given sample of helium in a 1 liter container with a pressure of .998 atm is moved to a 2 liter container. Determine the new pressure.