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South Carolina University: Effusion and Diffusion

For Students 9th - 10th
Graphic from a slide show shows the concept of effusion nicely. Definitions included.
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Frostburg State University

Frostburg State Chemistry Online: Pressure & Oxygen Solubility

For Students 9th - 10th
The effect of changing pressure on the solubility of oxygen in water. Explains how temperature and pressure affect dissolved oxygen levels. Includes example formulas.
Handout
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Applied Thermodynamics: Entropy

For Students 9th - 10th
Entropy is defined and discussed at this site from Applied Thermodynamics. The equation for this mathematical quantity is given and explained. Some unit information concerning entropy is provided.

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