Question

Найдите среднюю кинетическую энергию молекулы одноатомного газа при давлении 20 кПа, если известно, что концентрация молекул этого газа равна 3*10^25 м-3

Answer 1

<E> = 3/2 * k*T 
P = nkT => T = P/(kn) => <E> = 3/2*k*P/(kn) = 3/2*P/n =
= 3/2*20*10^3 Па / 3*10^25 м^-3 = 1 * 10^-19 Дж

Answer 2

Calculation of the Average Kinetic Energy of a Molecule in a Monoatomic Gas

To calculate the average kinetic energy of a molecule in a monoatomic gas, we can use the formula:

E_avg = (3/2) * k * T

Where: - E_avg is the average kinetic energy of a molecule - k is the Boltzmann constant (1.38 x 10^-23 J/K) - T is the temperature in Kelvin

In this case, we are given the pressure and concentration of the gas. However, we need the temperature to calculate the average kinetic energy. Without the temperature, it is not possible to provide a specific value for the average kinetic energy.

If you have the temperature, please provide it so that we can calculate the average kinetic energy for you.