The diagrams show the movement of particles for two substances. Which best compares the temperatures of the substances? Substance X has the highest temperature because its particles have more kinetic energy. Substance X has the highest temperature because it has fewer particles. Substance Y has the highest temperature because its particles have more kinetic energy. Substance Y has the highest temperature because it has more particles

In this problem, we see that the particles in the two substances have same mass, but particles of substance X travel faster than particles of substance Y, and since the average kinetic energy depends on the square of the speed of hte particles:

[tex]E_K=\frac{1}{2}mv^2[/tex]

we can conclude that particles in substance X have more kinetic energy than particles in substance Y, therefore substance X has higher temperature than substance Y.

snehashish65 snehashish65 · Answer 2 · 2021-12-06T17:31:11+01:00

Substance X has the highest temperature because its particles have more kinetic energy.

The temperature of a substance is directly proportional to the average kinetic energy of its particles, according to the equation,

[tex]KE = \dfrac{3}{2}kT[/tex]

Here,

k is the Boltzmann's constant.

T is the absolute temperature of the substance.

In the given problem, he particles in the two substances have same mass, but particles of substance X travel faster than particles of substance Y, and since the average kinetic energy depends on the square of the speed of the particles as,

[tex]KE = \dfrac{1}{2}mv^{2}[/tex]

So higher the temperature, higher will be the molecular vibration and more will the speed. And alternatively, more will be the value of kinetic energy.

Thus, we can conclude that the particles in substance X have more kinetic energy than particles in substance Y, therefore substance X has higher temperature than substance Y.

Learn more about the kinetic energy here:

https://brainly.com/question/12669551