explain how redox reactions are the source of electron flow in batteries. how can a dead battery be said to have attained equilibrium?

Just took the quiz on edgenuity and the correct answer is "c.  4.54 x  10–12  j"

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.