Practice - Numerical Insight (Conceptualizing Diffusion)
Practice Questions
Test your understanding with targeted questions
What does Brownian motion describe?
💡 Hint: Think about how pollen grains move in water.
What is the diffusion coefficient?
💡 Hint: Look for the role of particle size and medium viscosity.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What phenomenon describes the random movement of particles in a fluid?
💡 Hint: Remember the experiment with pollen grains.
True or False: The diffusion coefficient is independent of particle size.
💡 Hint: Consider how larger particles would behave.
1 more question available
Challenge Problems
Push your limits with advanced challenges
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.
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.
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Reference links
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