Gas Laws

The state of a gas can be defined by four properties: quantity, volume, temperature and pressure. These characteristics of gases are interrelated, i.e. changing one property affects the others. This module simulates common volume measurement experiments involving gases in an air tight syringe. Five different gases may be added to the syringe and the temperature may be adjusted. The amount of force a gas exerts on its container is its pressure. Each time a change is made the pressure of the gas in the container is calculated and displayed. In addition, a diagram of the flask is shown where the number of dots in the flask is proportional to the number of moles of the gas present.

</COMMENT>
INSTRUCTIONS
  1. Select the gaseous compound by clicking on one of the gas option buttons.
  2. Select the pressure exerted by the gas by adjusting the Pressure scroll bar, which adjusts the pressure between 100. and 2000. mmHg.
  3. Select the mass of the gas by adjusting the Mass scroll bar, which adjusts the mass between 1 and 200 mg.
  4. Finally, select the temperature of the gas by adjusting the Temperature scroll bar. The scroll bar adjusts the temperature between -50. and 200. degrees C.

Note that the graph displays the relationship between volume and the other three characteristics of the gases, mass, temperature and volume, as each is adjusted.
Last modified: April 13, 2000