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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a surrogate compound?
💡 Hint: Think about why we might use a similar compound.
Question 2
Easy
What is the recovery rate?
💡 Hint: How do we determine how much analyte we got back?
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 a surrogate compound represent in analysis?
- An unknown variable
- A standard compound
- A mimic of the analyte
💡 Hint: Consider its purpose in representing the analyte.
Question 2
The process of extracting an analyte from a sample is called what?
- True
- False
💡 Hint: Think about the separation techniques discussed.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A water sample contains a known concentration of a toxic substance. If 1 L is extracted with hexane, which has a concentration of 30 mg/L, how much of the substance will remain after a 50% recovery?
💡 Hint: Use your recovery percentage to find what's returned.
Question 2
If the recovery of several analytes is significantly different from the surrogate, what could be possible reasons, and how might you troubleshoot these variations?
💡 Hint: Think of factors affecting extraction and measurement.
Challenge and get performance evaluation