Which of the following is not a postulate of the kinetic molecular theory? select one: a. gas particles have most of their mass concentrated in the nucleus of the atom. b. the moving particles undergo perfectly elastic collisions with the walls of the container. c. the forces of attraction and repulsion between the particles are insignificant. d. the average kinetic energy of the particles is directly proportional to the absolute temperature. e. all of the above are postulates of the kinetic molecular theory.

a. Gas particles have most of their mass concentrated in the nucleus of the atom

Explanation:

The main postulates of the molecular kinetic theory are:

A gas consists of a set of small particles that move with rectilinear motion and obey Newton's laws (this means that this theory doesn't divide the atom in a nucleus and electrons, this is why a. is not correct)

The molecules of a gas do not occupy volume (this is assumed because between the molecules of a gas is a lot of space).

Collisions between the molecules are perfectly elastic (this means that energy is not gained or lost during the crash).

There're no forces of attraction or repulsion between the molecules (because each molecule is "far" of the others).

The average kinetic energy of a molecule is (where T is the absolute temperature and k the Boltzmann constant. This means that kinetic energy is directly proportional to temperature).

air quality

poor drinking water

and heavy polution

can lead to poor health

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)