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properties of a gas
| Term | Definition |
|---|---|
| A gas | A gas is defined as a substance that has no well defined boundaries but diffuses rapidly to fill the container in which it is placed |
| Kelvin Scale | Temperature can be converted into the kelvin scale by adding 273 to the celsius |
| 1 kPa | 1000 pa |
| 1 litre | 1000 cm |
| Standard temperature and pressure | 273K & 1x10(5) Pa |
| Boyles Law | States that, at constant temperature, the volume of a fixed mass of gas is inversely proportional to its pressure |
| Charles' Law | States that, at constant pressure the volume of a fixed mass of gas is directly proportional to to its temperature measured on the Kelvin Scale |
| Combined gas law equation | P1_V1 = P2_V2 T1 T2 |
| Reaction between gases | The volumes of the reacting gases are in the ratio of small whole numbers provided the volumes are measured at the same temperature and pressure |
| Avogadro's Law | States that equal volumes of gases contain equal numbers of molecules, under the same conditions of temperature and pressure |
| Ideal gases | Gases that obey all the assumptions of the kinetic theory of gases under all conditions of temperature and pressure |
| Real Gases | They differ from ideal gases because 1) Forces of attraction and repulsion between molecules and 2) the volume of the molecules is not negligible |
| The equation of state for an ideal gas | PV=nRT |
| convert Volume in cubic metres - volume in litres | litres X 10(-3) |
| Convert cubic metres to cm | cm X 10(-6) |
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