Which of the following substances would dissolve iodine?
water
ethanol
polar solvent
vinegar

Ethanol

Explanation:

Solvent is the that part of solution which is present in large proportion and have ability to dissolve the solute. In simplest form it is something in which other substance get dissolve. The most widely used solvent is water, other examples are toluene, acetone, ethanol, chloroform etc.

The solvent dissolve the solute. The dissolution of solute in to solvent always follow the " like dissolve like " rule of chemistry.

If solvent is made up of polar substance then it dissolve the polar solute. If it is non polar then it can dissolve the non polar substances.

Iodine have covalent iodine-iodine bond which is non polar so iodine would dissolve in ethanol.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.