2. Lecture 44 - Prof. Ravi Krishna

Try these first

1. 1.

   What does mass transfer refer to?

   Hint

   Think about how different phases like liquid, solid, and gas interact.

2. 2.

   What is a dispersion model?

   Hint

   Focus on its role in environmental science.

3. 3.

   What is the primary factor driving molecular diffusion?

   • Temperature
   • Concentration gradient
   • Pressure

   Hint

   Think about the natural tendency of substances to disperse.

4. 4.

   True or False: Oil will always sink in water.

   • True
   • False

   Hint

   Consider how density factors into this scenario.

5. 5.

   An oil spill of 100 liters occurs in a river. Calculate the potential impact over 48 hours considering evaporation and dissolution rates if 5% evaporates and 10% dissolves. How would this affect surrounding ecosystems?

   Hint

   Assess how immediate removal of 15 liters might change the ecosystem.

6. 6.

   Describe how a chemical with a high diffusion coefficient would behave in a body of water compared to one with a low diffusion coefficient. What implications does this have for pollution management?

   Hint

   Link diffusion behaviors to response times in pollution scenarios.