Question

19. What can you conclude about one mole of two different gases at the same temperature and pressure? one mole of two different gases cannot have the same temperature one mole of two different gases cannot have the same pressure the gas with the most molar mass has the greatest average kinetic energy both gases have the same kinetic energy is the passage of gas through a small hole and __is the mixing of gas molecules. Effusion, Dalton's law of partial pressures Diffusion, Diffraction Effusion, Diffusion Dalton's law of partial pressure, mole fraction 21 Select the correct statement particles of two different gases always move at the same average speed when they have the same kinetic energy N2 has a higher average speed of effusion than H2 H2 has a higher average speed of effusion than 02 the gas with the most molar mass has the greatest average kinetic energy

Please answer & explain 19-21

Answer 1

19)As both.are at same temperature then both the gases have the same kinetic energy

(D) is correct.

Because average kinetic energy depends only on temperature.

20) effusion is the passes of gas and diffusion is the mixing of gas molecules.

(C) is correct.

21)(c) is correct option. As H2 has lower molar mass so it has higher speed