Answer:
Postulate No. 1. A gas consist of very small particles, each of
which has a mass.
Why?
Postulate No. 2. The distance separating gas particles is relatively large.
Why?
Postulate No. 3. Gas particles are in constant, rapid, random motion, continually colliding.
Why?
Postulate No. 4. Collisions of gas particles with each other or with the walls of the containers are perfectly elastic.
Why?
Postulate No. 5. The average kinetic energy of gas particles depends only on the temperature of the gas.
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