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\nPassing Gases: Effusion, Diffusion and the Velocity of a Gas - Crash Course Chemistry\n

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\n\nPublisher:\n\nCrash Course\n\n\n
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\nWe have learned over the past few weeks that gases have real-life constraints on how they move here in the non-ideal world. As with most things in chemistry (and also in life) how a gas moves is more complex than it at first appears. In...\nWe have learned over the past few weeks that gases have real-life constraints on how they move here in the non-ideal world. As with most things in chemistry (and also in life) how a gas moves is more complex than it at first appears. In this episode, Hank describes what it means when we talk about the velocity of a gas - to understand gas velocity, we have to know what factors effect it, and how. Hank also teaches you about effusion, diffusion and concentration gradients, before showing off a cool experiment that physically demonstrates the things you have just learned. Sound exciting enough for you? Let's get started.

*Special Thanks to Matt Young at the University of Montana (Geosciences Department, Environmental Biogeochemistry Lab) who helped with the chemical demonstrations.*

Table of Contents
Net Velocity vs. Average Velocity 1:17
Effusion 4:47
Graham's Law 5:52
Diffusion 7:22
Concentration Gradients 7:08
Precipitation Reaction with Gases 8:21\n
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Resource Details

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Educator Rating
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Media Length
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10:21
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Grade
12th - Higher Ed
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Subjects
Science
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Media Type
Instructional Videos
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Source:
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\nCrash Course Chemistry\n\n
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Date
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2013
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Language
English
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Audiences
For Teacher Use
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Usage Permissions
Fine Print: Educational Use
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Concepts

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molar mass, particles, helium, atoms, gases, hydrochloric acid, smell, eggs, kinetic energy, average velocity, mass, chlorine
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Additional Tags

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inversely proportional, square root, crash course, traveled, individual atoms, specific direction, ammonium chloride, moves, conditions, case, proportional, average, grahams law, gas moves, net velocity, travel, move freely, move, identical conditions, individual particles, porous barrier, barrier, spread, graham
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Best For: Explaining a topic
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