Compare the mile traveled by light in one year to the distance across the United States (3 000 miles or the circumference of Earth 25 000 miles).

Where is the following?

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.

Ithink the answer is b.