6.1 - Headspace in Chemical Samples
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Practice Questions
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What is sludge?
💡 Hint: Think about what waste might look like in a tank.
Define mass balance.
💡 Hint: It ensures that nothing is lost in the process.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What happens to the concentration of contaminants when rainwater is added to sludge?
💡 Hint: Consider how volume affects concentration.
True or False: Headspace in a container does not affect sample analysis.
💡 Hint: Think about what happens when gases escape.
1 more question available
Challenge Problems
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A waste tank contains 500 kg of sludge with a concentration of 150 mg/kg of contaminant A. If 300 liters of rainwater is added, calculate the new concentration of A in the aqueous phase, assuming complete mixing.
💡 Hint: Use the formula C₁V₁ + C₂V₂ = C₃V₃.
Discuss how increasing the volume of headspace in a sampling bottle alters the concentration of volatile contaminants. Use a specific example.
💡 Hint: Consider the relationship between vapor pressure and volume of air.
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