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
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is molecular diffusion?
💡 Hint: Think about how a drop of ink spreads in water.
Question 2
Easy
What does the diffusion coefficient indicate?
💡 Hint: Consider what affects how fast something can move in a fluid.
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 is the primary driver of molecular diffusion?
- Temperature
- Chemical potential
- Pressure
💡 Hint: Consider what initiates movement in a substance.
Question 2
True or False: Diffusion cannot occur without bulk movement.
- True
- False
💡 Hint: Think about what happens in a stagnant liquid.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the expected concentration of a pollutant within a river if an initial concentration of 5 mg/L is released and it diffuses evenly at a rate defined by its diffusion coefficient across a width of 2 m over a distance of 100 m.
💡 Hint: Feel free to reference concentration gradient equations.
Question 2
A tank holds 100L of water with a chemical concentration of 10mg/L. If a 1 g chemical is added, how will diffusion alter concentration over time, considering the diffusion coefficient?
💡 Hint: Examine how the diffusion coefficient impacts equilibrium state.
Challenge and get performance evaluation