Question

Средняя кинетическая энергия поступательного движения всех молекул 2г гелия равна 8 Дж. какова температура гелия?

Answer 1

W=8    m=2*10^-3   R=8.31  M=4*10^-3

W=(3/2)*m*R*T/M

T=2*W*M/(3*m*R)=2*8*4*10^-3/(3*2*10^-3*8.31)=..........

Answer 2

E=3*k*T*N/2
N=m/m0=m*Na/M=2*10^-3*6*10^23/4*10^-3=3*10^23
T=2*E/3*k*N

Answer 3

Calculation of Temperature of Helium

To calculate the temperature of helium, we can use the equation that relates the average kinetic energy of the translational motion of gas molecules to temperature. The equation is as follows:

E = (3/2) kT

Where: - E is the average kinetic energy of the translational motion of gas molecules - k is the Boltzmann constant - T is the temperature in Kelvin

Given that the average kinetic energy of the translational motion of all helium molecules is 8 J and the mass of each helium molecule is 2 g, we can calculate the temperature.

First, we need to convert the mass of each helium molecule from grams to kilograms: - 2 g = 0.002 kg

Next, we can rearrange the equation to solve for temperature: T = (2E) / (3k)

Substituting the given values: T = (2 * 8 J) / (3 * k)

Now, we need to find the value of the Boltzmann constant, k. The Boltzmann constant is approximately equal to 1.38 x 10^-23 J/K.

Substituting the value of k: T = (2 * 8 J) / (3 * 1.38 x 10^-23 J/K)

Calculating the temperature using the given values: T ≈ 3.62 x 10^22 K

Therefore, the temperature of helium is approximately 3.62 x 10^22 Kelvin.

Please note that this temperature is extremely high and not physically realistic. It is possible that there may be an error in the given information or calculation.