Which of the following is an assumption that is made in the kinetic theory of gases?
A)Molecules are not described by Newton's laws.
B)Molecules make up only a small fraction of the volume occupied by a gas.
C)Molecules collide inelastically.
D)The total number of molecules is actually very small.
E)There are forces acting on the molecules at all times.

Question

Quizplus · Accepted Answer

The kinetic theory of gases assumes that gas is made up of small molecules that are constantly moving and that the volume of these molecules is negligible compared to the total volume of the gas. This assumption is necessary to derive the relationships between the macroscopic properties of gases, such as pressure, volume, and temperature, and the microscopic behavior of the individual molecules.

All of the other choices are incorrect: 
A) The kinetic theory of gases is based on the principles of classical mechanics, including Newton's laws of motion. 
C) The assumption is that molecules collide elastically, meaning that there is no net loss of kinetic energy during the collision. 
D) The total number of molecules in a gas is assumed to be very large. 
E) While molecules may experience intermolecular forces, the kinetic theory of gases does not assume that these forces are always present or significant.

Which of the Following Is an Assumption That Is Made