5 - Equations for Chemical Mass in Liquid System
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Practice Questions
Test your understanding with targeted questions
Define mass balance in terms of chemical systems.
💡 Hint: Think about how you account for resources in a closed system.
What does porosity refer to?
💡 Hint: Consider what allows water to pass through soil.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the term 'mass balance' refer to in sediment systems?
💡 Hint: Consider how flow can impact mass tracking.
True or False: Effective diffusivity is the same as regular diffusivity.
💡 Hint: Think about why diffusion might slow down in porous media.
3 more questions available
Challenge Problems
Push your limits with advanced challenges
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.
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.
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