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2 cards from this section. Quick, good the night before a test.
Define flux in the context of mass transfer.
Think about how we measure movement of pollutants.
What does Fick’s law describe?
Recall how concentration affects movement.
What is the main purpose of Fick's law?
Think about how concentration affects movement.
True or False: Higher viscosity always leads to higher diffusion rates.
Consider how thickness affects motion.
A river with a steady flow has pollutants entering from sediments. If the concentration gradient from the sediment to water is calculated to be 2 mg/L over a distance of 0.5m, calculate the flux using Fick's law where the diffusion coefficient is known to be 0.01 m²/s.
Remember to convert units if necessary!
Explain how different velocities in a river would change the resistance to mass transfer. Illustrate with examples.
Use analogies from previous examples discussed in class!
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