Practice Generalized Mass Balance - 2.2 | 9. Transport of Pollutants - Introduction | Environmental Quality Monitoring & Analysis, - Vol 3
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Knowledge

2.2 - Generalized Mass Balance

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does mass balance account for in a system?

💡 Hint: Think about input, output, and change in the system.

Question 2

Easy

What is meant by unsteady state?

💡 Hint: Consider how concentrations evolve in a flowing water system.

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 help to determine?

  • The rate of pollution generation
  • Input vs. output in a system
  • Total production of a chemical

💡 Hint: This equation balances in terms of input and output.

Question 2

True or False: In a steady state, the concentration of pollutants changes over time.

  • True
  • False

💡 Hint: Think about what steady means in terms of flow and concentration.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Consider a lake with an inflow of 500 L/day and an outflow of 300 L/day. If a pollutant is generated at 100 mg/day and lost at 30 mg/day due to evaporation, calculate the change in concentration over a day assuming the lake's volume is constant.

💡 Hint: Use the mass balance equation and factor the pollutant generated and lost.

Question 2

If a segment of river initially has a concentration of 200 mg/L and receives an additional inflow of 100 mg/L from tributaries, calculate the new concentration assuming the flow is steady.

💡 Hint: Consider both the main river flow and tributary contributions for average concentration.

Challenge and get performance evaluation