Practice Conclusion (5) - Interphase Mass Transfer – Flux and Mass Transfer Resistance

Practice: Conclusion

Lesson 5Interphase Mass Transfer – Flux and Mass Transfer Resistance

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8 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define Flux in the context of mass transfer.
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Think about how we quantify movement.
Question 2.
What does Fick’s Law describe?
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Recall the key formula relating concentration and flux.
3Question 3.
What role does Fick's Law play in mass transfer?
- A. It defines fluid viscosity.
- B. It describes diffusion based on concentration gradients.
- C. It calculates sediment volumes.
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Recall the principles of molecules moving from high to low concentration.
4Question 4.
True or False: Increased viscosity will always enhance diffusion.
- True
- False
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Think about how thick substances behave differently than thin ones.
Question 5.
Consider a river with contaminants entering at a concentration of 10 mg/L. The exit concentration is measured at 5 mg/L. If sediments provide an additional 3 mg/L, calculate the net impact on water quality and write a mass balance equation to represent this.
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Remember to define all variables clearly before solving.
Question 6.
During an experiment, the diffusion coefficient of a pollutant in water was found to be 0.1 cm²/s at a certain temperature. What might you expect the diffusion coefficient to be at a higher temperature, and why?
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Think about how heat affects molecular speed in liquids.

4 more questions in this section. Enroll free to practise them all.