The simulation shows two types of molecules: a polar molecule and a non-polar molecule.

Which one is the polar molecule? How can you tell?

Assume that one molecule is HBr and another is Br2. Which one is which? Explain.

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.