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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the basic equation of diffusion discussed in this section?
💡 Hint: Look for the relationship between concentration and diffusion in time.
Question 2
Easy
What does D represent in the diffusion equation?
💡 Hint: Think about how quickly substances spread.
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 does the variable C represent in the diffusion equation?
- Pressure
- Concentration
- Velocity
💡 Hint: Remember the basic definition of concentration.
Question 2
True or False: The diffusion coefficient (D) is irrelevant in determining how quickly substances diffuse.
- True
- False
💡 Hint: Think about how fast a substance spreads.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Consider a body of water contaminated with a substance having a diffusion coefficient of 0.1 cm²/s. If the concentration at the source is 100 mg/L and in the surrounding water is 10 mg/L, estimate when the concentration will equalize within a distance of 10 cm. Use the diffusion equation appropriately.
💡 Hint: Experiment with visualizing the diffusion process over time to assist in your calculation.
Question 2
A drug is released from a pill in a controlled manner with a diffusion coefficient of 2.0 x 10^-6 cm²/s. If it takes 2 hours for the drug concentration at a certain distance to reach 5 mg/L from an initial dose concentration of 200 mg/L, assess the effectiveness of the drug by evaluating diffusion parameters.
💡 Hint: Focus on how releasing drugs slowly could result in consistent concentration levels that attain therapeutic goals.
Challenge and get performance evaluation