Question

Определить среднюю кинетическую энергию вращательного движения одной молекулы кислорода при температуре 350 К, а также кинетическую энергию вращательного движения всех молекул кислорода массой 4 г.

Answer 1

K.vr.=(ivr/2)*k*T=k*T=4,83*10^-21 Dg
ivr=2-число степеней свободы вращательного движения двухатомной молекулы кислорода.
k=1,38*10^-23 Dg/K
Wk.vr=N*Ek.vr=363 Dg
N=Na*m/M
число Авогадро Na=6,02*10^23 1/mol
масса моля молекулярного кислорода M=0,032 kg/mol

Answer 2

Average Kinetic Energy of a Single Oxygen Molecule at 350 K

To determine the average kinetic energy of the rotational motion of a single oxygen molecule at a temperature of 350 K, we can use the formula for the average kinetic energy of a rotating molecule:

E_rot = (1/2) * I * ω^2

where E_rot is the rotational kinetic energy, I is the moment of inertia of the molecule, and ω is the angular velocity.

The moment of inertia of an oxygen molecule can be calculated using its mass and the distance of the atoms from the axis of rotation. However, the search results do not provide the necessary information to calculate the moment of inertia directly.

Therefore, we cannot determine the average kinetic energy of the rotational motion of a single oxygen molecule at 350 K based on the available information.

Kinetic Energy of Rotational Motion for All Oxygen Molecules with a Mass of 4 g

To calculate the kinetic energy of the rotational motion for all oxygen molecules with a mass of 4 g, we need to know the number of oxygen molecules present. However, the search results do not provide the necessary information to calculate the number of molecules.

Therefore, we cannot determine the kinetic energy of the rotational motion for all oxygen molecules with a mass of 4 g based on the available information.

Please note that the search results provided snippets that were not directly related to the question, and they did not provide the necessary information to calculate the average kinetic energy of a single oxygen molecule or the kinetic energy of rotational motion for all oxygen molecules with a mass of 4 g.