2.2 - Resistance in Mass Transfer
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Practice Questions
Test your understanding with targeted questions
Define mass transfer resistance in your own words.
💡 Hint: Think about the factors affecting pollutant transfer.
What is mixing height?
💡 Hint: Relate it to how pollutants would behave once released.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does mass transfer resistance refer to?
💡 Hint: Think about what limits pollutant exchange.
True or False: Higher mixing heights generally result in lower pollutant concentrations at ground level.
💡 Hint: Consider how pollutants spread with height.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A pollutant is released into a lake. After one hour, its concentration is measured at 300 mg/L in the water. If the evaporation rate is 10 mg/L per hour, calculate the rate of accumulation and prepare the mass balance equation.
💡 Hint: Remember to identify all terms in the mass balance equation.
Consider a scenario where pollutant x evaporates from a still lake surface at a concentration of 200 mg/L. If the ambient air concentration is zero, and kA2 = 0.25 m/s, calculate the flux and explain its implications.
💡 Hint: Identify concentration gradients as driving forces for mass transfer.
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