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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does Brownian motion describe?
💡 Hint: Think about how pollen grains move in water.
Question 2
Easy
What is the diffusion coefficient?
💡 Hint: Look for the role of particle size and medium viscosity.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What phenomenon describes the random movement of particles in a fluid?
- Diffusion
- Brownian Motion
- Thermodynamics
💡 Hint: Remember the experiment with pollen grains.
Question 2
True or False: The diffusion coefficient is independent of particle size.
- True
- False
💡 Hint: Consider how larger particles would behave.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A small particle diffuses in water with a coefficient of D = 2.5×10⁻¹⁰ m²/s. Calculate the distance it will travel after 5 seconds. Show your calculations.
💡 Hint: Remember to apply the square root to find the distance, not just the mean square displacement.
Question 2
Discuss how enhancing the diffusion coefficient can improve the effectiveness of a drug delivery system. What factors may influence this coefficient in actual systems?
💡 Hint: Think about how temperature and medium characteristics change the behavior of molecules.
Challenge and get performance evaluation