Practice Calculating Flux And Concentration (2) - Evaporation from Different Surfaces

Practice: Calculating Flux and Concentration

Lesson 2Evaporation from Different Surfaces

Practise this section

9 questions

Flashcard drill
3 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 flux in your own words.
Show hintHide hint
Think about movement across an area.
Question 2.
What is a mass transfer coefficient?
Show hintHide hint
Consider what drives mass transfer.
3Question 3.
What is the role of mass transfer coefficients in environmental studies?
- To calculate energy
- To quantify mass transfer rates
- To measure temperature
Show hintHide hint
Remember what drives mass transfer.
4Question 4.
Flux is defined as:
Show hintHide hint
Focus on the movement across surfaces.
Question 5.
A chemical spill of 200 liters occurs on a river. Estimate how the concentration in the water changes over time, given the following: initial concentration is 0 ppm, and kA is 0.5 for the dissolved chemical.
Show hintHide hint
Don't forget to keep track of your time intervals!
Question 6.
Consider a scenario where a pollutant evaporates from a surface. If the initial pollutant concentration is 50 mg/m³ and the mass transfer coefficient is 0.1 m/s, how long will it take to reduce to a concentration below 10 mg/m³?
Show hintHide hint
Reflect on the first-order decay processes we've discussed.

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