Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
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