Which one of the following statements concerning a collection of gas molecules at a certain temperature is true?

Question

Quizplus · Accepted Answer

The kinetic energy of a gas molecule is proportional to its velocity squared. Therefore, at a certain temperature, the molecules will have a range of velocities and therefore a range of kinetic energies. Choice A is incorrect because the molecules in a gas will have a range of velocities. Choice B is incorrect because the distribution of kinetic energies will follow a Maxwell-Boltzmann distribution, with some molecules having higher or lower kinetic energies than most. Choice C is incorrect because the higher the temperature, the greater are the molecular speeds. Choice D is incorrect because the momentum of a molecule is equal to its mass times its velocity, so each molecule will have a different momentum due to their different velocities.

Which One of the Following Statements Concerning a Collection of Gas