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In an extraction procedure, it is advisable to: save all layers until the experiment is complete. throw away all layers as soon as you have extracted them. put the aqueous layer down the drain. put the organic layer in the aqueous waste.

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All the layers should be kept until the experiment is complete.

What is extraction?

In chemistry, solvent extraction is accomplished by adding a sample containing the substance to be separated into a system of two solvents, an aqueous layer and an organic layer.

It is important to note that all the layers should be kept until the experiment is complete. No layer ought to be discarded before the work is completed.

Learn more about solvent extraction:https://brainly.com/question/11041092

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