Final answer:
Dichlorine heptoxide is the correct answer because, unlike the other options, it does not dissociate into ions in an aqueous solution and therefore is not expected to conduct electricity.
Step-by-step explanation:
The aqueous solution that you would not expect to conduct electricity is one containing a solute that does not dissociate into ions. Among the given options, dichlorine heptoxide is the correct answer. This compound is a molecular substance that, when dissolved in water, is likely to retain its molecular form and not produce ions required for electrical conductivity. On the other hand, ammonium sulfide, lithium acetate, and magnesium chloride are all ionic compounds. When dissolved in water, these compounds dissociate into their constituent ions, allowing the solution to conduct electricity efficiently.