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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define mass balance in your own words.
💡 Hint: Think about how inputs and outputs relate.
Question 2
Easy
What is evaporation?
💡 Hint: Consider what happens to water in a pot on the stove.
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 mass balance equation express?
- Rate of Input = Rate of Output
- Rate of Accumulation = Rate in - Rate out
- Rate of Change = Mass Transfer
💡 Hint: Focus on the relationship between what's coming in and going out.
Question 2
True or False: Evaporation plays no role in the mass balance of pollutants.
- True
- False
💡 Hint: Remember how pollutants can enter the air.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A factory continuously admits 500 kg of a pollutant every week into a lake while 200 kg are evaporated. Calculate the total mass of the pollutant after 4 weeks and discuss the implications.
💡 Hint: Use the mass balance equation to track inputs and outputs.
Question 2
If the lake has an initial concentration of 4400 kg of a pollutant and it is diluted by a rainfall of 1000 cubic meters with a clean water influx, what happens to the concentration?
💡 Hint: Consider how dilution works when additional water is introduced.
Challenge and get performance evaluation