Question

Which defines the average kinetic energy of a systems particles?

A.
Density
B.
Pressure
C.
Temperature
D.
Volume

Answer 1

Answer : The correct option is, (C) Temperature

Explanation :

Average kinetic energy : Average kinetic energy of the gas particles are directly proportional to the temperature of the gas particles.

Formula used for the average kinetic energy is :

`K_(avg)=(3RT)/(2N_a)`

where,

`K_(avg)` = average kinetic energy

R = gas constant

`N_a` = Avogadro's number or constant

T = temperature of the system

From the formula, we conclude that the average kinetic energy is directly proportional to the temperature. That means temperature defines the average kinetic energy of a systems particles.

Therefore, the correct option is, (C) Temperature

Answer 2

Answer: The correct option is C.

Step-by-step explanation: Relation of average kinetic energy is given as:

`K_(avg)=(3R)/(2N_A)T`

Where,

R = Universal gas constant

`N_A` = Avogadro's Number

T = temperature

From the above equation,

`K_(avg)\propto T`

Hence, average kinetic energy of the particles id defined by Temperature.