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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define mass balance in terms of chemical systems.
💡 Hint: Think about how you account for resources in a closed system.
Question 2
Easy
What does porosity refer to?
💡 Hint: Consider what allows water to pass through soil.
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 term 'mass balance' refer to in sediment systems?
- Tracking mass over time
- Chemical reaction rates
- Solid volume measurements
💡 Hint: Consider how flow can impact mass tracking.
Question 2
True or False: Effective diffusivity is the same as regular diffusivity.
- True
- False
💡 Hint: Think about why diffusion might slow down in porous media.
Solve 3 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Consider a hypothetical sediment system with a high porosity of 0.5 and a diffusivity of 1 × 10^-5 m²/s. Calculate the effective diffusivity using Millington-Quirk's equation.
💡 Hint: Use the formula correctly, remembering to calculate φ raised to the power.
Question 2
Construct a mass balance equation for a contaminated river sediment. Assume the sediment has 10% saturation with a contaminant concentration of 200 mg/L and assess the risk of leaching.
💡 Hint: Pay attention to how leaching would be calculated in your mass balance.
Challenge and get performance evaluation