Practice - Unsteady State and Mass Balances
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Practice Questions
Test your understanding with targeted questions
Define unsteady state.
💡 Hint: Think about how concentrations behave in dynamic systems.
What is a mass balance?
💡 Hint: Consider inputs, outputs, and changes in accumulation.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the key difference between unsteady state and steady state?
💡 Hint: Remember how systems vary over time.
True or False: A mass balance looks at the rate of accumulation and the rate of loss.
💡 Hint: Think about how inputs and outputs affect overall mass.
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Challenge Problems
Push your limits with advanced challenges
If a river segment has an inflow of pollution at a concentration of 5 mg/L and outflow at 3 mg/L, calculate the net accumulation rate if the flow rate is 100 L/min.
💡 Hint: Use the mass balance principles you learned.
Model a scenario in which a lake's concentration of a pollutant increases due to a chemical reaction producing it at a rate of 50 mg/day while evaporation removes 20 mg/day. If the lake volume is constant, determine the new concentration after one day.
💡 Hint: Consider using the mass balance formula for calculations.
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