Practice Comparison Of Coefficient For Different Chemicals (5) - Evaporation from Different Surfaces

Practice: Comparison of Coefficient for Different Chemicals

Lesson 5Evaporation from Different Surfaces

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9 questions

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4 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
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is DNAPL? Provide a brief definition.
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Focus on the density comparison with water.
Question 2.
Explain what the mass transfer coefficient represents.
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Consider discussing phases like water and air.
3Question 3.
What does DNAPL stand for?
- Dense Non-Aqueous Phase Liquid
- Dilute Non-Aqueous Phase Liquid
- Dense Aqueous Phase Liquid
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Remember what makes these liquids unique in aquatic environments.
4Question 4.
True or False: The mass transfer coefficient is the same for all chemicals.
- True
- False
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Think about the conditions that affect mass transfer.
Question 5.
A DNAPL with a solubility of 5 g/L is spilled in a river, with water having a concentration of 1 g/L. If the mass transfer coefficient is empirically found to be 20 cm/h, calculate the estimated flux.
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Make sure to track the changes in concentration accurately.
Question 6.
How would you adapt the mass transfer coefficients calculated for ethyl ether to predict those for benzene with a molecular weight of 78 g/mol, versus ethyl ether's 74 g/mol?
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Focus on the specific characteristics of the molecular weights.

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