What is one chemical property of iron? a) iron is malleable. b) the density of iron is 7.86 g/cc. c) iron combines readily with oxygen. d) iron is a good conductor of electricity and heat.

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.