Avogadro's Law and Combined Gas Law

On Wednesday, we learned our third and fourth gas law. Avogadro's law states that volume is directly proportional to the number of moles of gas present as long as there is constant temperature and pressure. So, as the number of moles in a gas increase, the volume will have to increase to maintain that constant pressure and temperature. Here is a picture that represents that concept:

http://wps.prenhall.com/wps/media/objects/4678/4790892/ch09_02.htm

As you can see, the moles and volume doubled to keep the pressure at 1 atm in both cases.

Below is the formula we use in math problems that involve Avogadro's law:

http://me-mechanicalengineering.com/gas-laws/

A helpful fact that comes in handy with some math questions is that the volume of one mole of gas is 22.4 liters. This can be used as a conversion factor.

We also learned about the combined gas law that involves a change in all variables, like moles, volume, temperature, and pressure. It combines all of the gas laws we have learned so far. Here is the formula for it:

http://me-mechanicalengineering.com/gas-laws/

Here are also a couple links that further explain these two laws:

Combined Gas Law

Avogadro's Law