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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a mass balance?
💡 Hint: Think about conservation of mass.
Question 2
Easy
Define Chemical A in the context of this section.
💡 Hint: It's not a real substance but a model for understanding contaminants.
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 is the main principle of a mass balance?
- Mass can be created
- Mass can be destroyed
- Mass is conserved
💡 Hint: Think about what happens in a closed system.
Question 2
True or False: Chemical A is derived from the rainwater.
- True
- False
💡 Hint: Recall what we've discussed about the sources of A.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A tank initially contains 500 kg of sludge with 20 mg/kg of chemical A. If 1000 m³ of rainwater is added (with no A), calculate the new concentration of A in the water phase.
💡 Hint: Don't forget to convert m³ of water to kg (density 1000 kg/m³).
Question 2
Explain the role of kinetic factors in a real-world example of pollutant dispersion in a body of water.
💡 Hint: Consider how flow rates in streams or rivers might affect dispersion.
Challenge and get performance evaluation