Question

multiple choice
One mole of helium and one mole of neon are taken in a vessel. Which of the following statements are correct?
(A) Molecules of helium strike the wall of vessel more frequently
(B) Molecules of neon apply more average force per collision on the wall of vessel.
) .
(C) Molecules of helium have greater average molecular speed.
(D) Helium exerts higher pressure than neon.​

Answer 1

Answer:

Correct option is:-

(c) Molecules of helium have greater average molecular speed.

Explanation:

Helium gas has lower molecular mass and hence it moves faster than neon and strikes the wall more frequently.

μμa = πM

8RT

μ

av

∝(

M

1

)

1/2

Hence. He has higher speed than neon