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CathyLou

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**8.**

(a) What is the average velocity of the molecules in a gas?

(b) Explain your answer.

9. Two moles of He gas are at a pressure of 105 Pa and have a volume of 0.5m3.

(a) What is the mean square speed of the He atoms?

(b) What is the root mean square speed of the He atoms?

10. What is the average kinetic energy of the particles of a gas at 400ºC?

(a) What is the average velocity of the molecules in a gas?

(b) Explain your answer.

9. Two moles of He gas are at a pressure of 105 Pa and have a volume of 0.5m3.

(a) What is the mean square speed of the He atoms?

(b) What is the root mean square speed of the He atoms?

10. What is the average kinetic energy of the particles of a gas at 400ºC?

Thank you.

Cathy