Practice Scaling Laws In Mass Transfer (5.1) - Evaporation from Different Surfaces

Practise this section

9 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define DNAPL.
Show hintHide hint
Think about its behavior when spilled in water.
Question 2.
What does flux measure in environmental terms?
Show hintHide hint
It’s about flow per unit area.
3Question 3.
What does DNAPL stand for?
- Dense Natural Aqueous Phase Liquid
- Dense Non-Aqueous Phase Liquid
- Dilute Non-Aqueous Phase Liquid
Show hintHide hint
Focus on the density aspect.
4Question 4.
True or False: Flux is the rate of contaminant movement from water to sediment.
- True
- False
Show hintHide hint
Think about the direction of flow.
Question 5.
A river has a DNAPL spill and a flux of 20 kg/m²/h is estimated. If the concentration in sediment is 100 mg/L and in water is 10 mg/L, calculate the mass transfer coefficient.
Show hintHide hint
Remember to convert units if necessary.
Question 6.
Discuss the approach you would take if the wind speed changes significantly while assessing evaporation coefficients from a lake.
Show hintHide hint
What happens to the mass transfer rate as wind speed increases?

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