At which of the following temperatures is the average connectic energy of the molecules of a substance at the least? 23.2 °C 35.2°C 15.2°C

At 15.2°C. Kinetic energy of molecules highly depends on the temperature - the warmer it is, the faster the molecules will move, especially in fluids (gases and liquids). If we consider that the formula for average kinetic energy of molecules is:

Ek = 3/2*k*T where k is Boltzmanns constant and 3/2 is, well, 3/2, kinetic energy of molecules really only depends on the temperature.

Explanation:

shristiparmar1221 shristiparmar1221 · Answer 2 · 2022-08-03T21:03:11+02:00

The average Kinetic energy of the molecules of a substance is the least at 15.2°C. Hence option (3) is correct.

What is Average Kinetic Energy ?

The average kinetic energy is defined as the product of the half of the mass of each gas molecule and the square of RMS speed for a gas molecule.

Kinetic energy of molecules highly depends on the temperature - the warmer it is, the faster the molecules will move, especially in fluids (gases and liquids).

If we consider that the formula for average kinetic energy of molecules is:

Κ.E. = 3/2 x k x T

where, k is Boltzmanns constant and T is Temperature.

Therefore, The average Kinetic energy of the molecules of a substance is the least at 15.2°C. Hence option (3) is correct.

Learn more about Kinetic energy here ;

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