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Lecture 5

Lecture 5 - Wed Starting Chapter 6 PS2 due Friday Practice...

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1 Wed: Starting Chapter 6; PS2 due Friday Practice Problems: Ch 9- 19, 33, 35, 37, 43, 51, 57, 63, 83 Prob. 2: NO (g) + NO 2 (g) + O 2 (g) N 2 O 5 (g) Prob. 4: Assume 1 mole.

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2 Area of Wall = A Consider gas atoms, each of mass m, in a container. How much momentum is transferred to the wall for one collision? Atoms can collide with the wall of area A. v x = Initial component of velocity v in x direction. mv x = Initial component of momentum along x axis. Atom undergoes elastic collision with wall. After collision, component of momentum along x axis = -mv x The magnitude of the momentum change upon collision = 2mv x The Kinetic Theory of Gases v v x x
3 How many collisions with wall Will occur during time interval t? N atoms in container. Volume = V Atom with velocity v x will travel distance v x tin±time±interval± t To hit wall, atom must be initially located within this distance from wall. All particles in volume Av

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Lecture 5 - Wed Starting Chapter 6 PS2 due Friday Practice...

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