is a strong electrolyte. is a weak electrolyte.

(Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not needed, leave it blank.)

To determine if a substance is a strong or weak electrolyte, we need to consider its ability to conduct electricity when dissolved in water.

A strong electrolyte is a substance that completely dissociates into ions when dissolved in water, which means it forms a high concentration of ions in solution. This allows it to conduct electricity efficiently. Strong electrolytes include ionic compounds such as salts, acids, and bases.

On the other hand, a weak electrolyte only partially dissociates into ions when dissolved in water. It forms a relatively low concentration of ions in solution, leading to less efficient electrical conductivity. Weak electrolytes include weak acids and weak bases.

Now, let's apply this knowledge to the given substances in your question:
- To determine if a substance is a strong or weak electrolyte, we need to consider its ability to dissociate in water. If a substance completely dissolves in water and releases ions, it is a strong electrolyte. If it only partially dissociates, it is a weak electrolyte.

Since you didn't provide any specific substances in your question (the blanks were left empty), I'm unable to determine which specific substances you are referring to. If you could provide the names or formulas of the substances, I would be able to give a more specific answer.