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Questions and Answers
What is the approximate volume of a full squirt from a dropper?
1 mL
Why is it crucial to avoid contamination of the samples and chemical reagents in the procedures for separating and identifying the cations in a mixture?
To prevent false positive results
What is a potential way to contaminate a solution when using a glass stirring rod?
Laying the rod on a dirty lab bench
Why is distilled water required for the procedures for separating and identifying the cations in a mixture?
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What could happen if you touch the tip of a medicine dropper to the side of a test tube?
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What is the purpose of a centrifuge in a laboratory setting?
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What is the importance of balancing test tubes in a centrifuge?
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What should you do if the centrifuge starts vibrating during operation?
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Why is it crucial to use clean test tubes and pipets when working with samples?
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Why are heating samples directly in small test tubes not recommended?
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Why are pipets or droppers used to measure and transfer small volumes of liquid?
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