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2 cards from this section. Quick, good the night before a test.
Define a well-mixed system.
Think about how mixing affects concentration.
What is a mass balance?
Consider how substances accumulate.
What does a well-mixed system ensure?
Consider the definition of well mixed.
True or False: Steady-state systems can have fluctuating concentrations.
Think about the implications of steady-state.
Given a lake where the inflow of pollutants is 10 g/day and the evaporation rate is 3 g/day. Develop the mass balance equation for the lake and calculate the concentration after one day assuming the lake has a volume of 1000 L.
Use the mass outflow and inflow rates to determine the change in concentration.
Discuss the real-world application of box models in a specific river system, noting any simplifications that may be required.
Consider how segmentation might ignore localized events but simplify overall modeling.
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