In a recent class, my instructor covered the Kinetic Theory of gases. My question is in regard to the theory which states 1) The size of the individual molecues in a gas are so small that their volumes can be considered negligible. The instructor then mentioned that the paticles in the gas can be considered to be in static equlibrium. He hinted that this theory, in relation to static equilibrium would appear on the final. However, after looking through the textbook, I see nothing relating the two. Can someone explain how this theory is connected to, or can be applied tot he concept of static equilibrium? How are the particles in static equlibrium if accorded to KT, they are constantly moving?