عدد الرسائل : 91 العمر : 53 البلد : ismailia العمل/الترفيه : التربية والتعليم المزاج : رايق تاريخ التسجيل : 18/11/2007
موضوع: Chapter Seven : Kinetic Theory of Gases السبت يناير 12, 2008 2:00 am
1- Postulates of kinetic theory of gases: - Gas molecules are perfectly elastic minute spheres, there volumes are neglegable compared to the volume they occupy: - The intermolecular spaces, spacing gas molecules, are large enough to make the attraction forces very small and can be neglected. - The gas molecules are in continuous motion as described by "Brown " in the " Brownian motion ". - All collissions with each other or with the walls of the container are perfectly elastic.
2- The mole of any substance equals the molecular mass number in grams. 3- Avogadro's number is the number of molecules in one mole and equals 6.032 x 10 23
4- The gas density :
5- The pressure of an enclosed gas:
6- The K.E. of one molecule is taken as a measure to the temperature at Kelvin Scale.