4. Convection and Its Impact on Mass Transfer

Try these first

1. 1.

   Define flux in the context of mass transfer.

   Hint

   Think about the flow of substances.

2. 2.

   What does Fick’s Law describe?

   Hint

   Recall the direction of substance movement.

3. 3.

   What does flux represent in mass transfer?

   • The speed of a fluid
   • The mass of a substance
   • The rate of transfer per unit area

   Hint

   Think about how we measure flows in pipes or rivers.

4. 4.

   True or False: Higher temperatures decrease the diffusion coefficient.

   • True
   • False

   Hint

   Reflect on how heat changes movement behavior.

5. 5.

   In a river contaminated with a pollutant, using the box model, how would you determine the effectiveness of bioremediation efforts over time based on mass transfer?

   Hint

   Focus on changes in concentration levels and rates over designated time frames.

6. 6.

   Analyze a scenario where a change in flow velocity impacts pollutant spread. How might you theoretically describe this using mass transfer equations?

   Hint

   Consider how higher velocities impact diffusion layers at interfaces!