A student has a test tube containing a layer of water and a layer of hexane (C6H14). A solid sample of KI is introduced into the test tube, and the contents are carefully stirred. The Iis converted into I3 - , which is a linear ion. In which layer would the I3 - concentration be higher

Aqueous (water) layer

Explanation:

If water and hexane are mixed, the to liquids separate into two immiscible layers; an organic layer and an aqueous layer.

The organic layer will remain at the top, while the aqueous layer will remain below.

Ions can mostly be found in the aqueous layer, hence the aqueous (water) layer will have a higher concentration of the I3^- ion.

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radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.