A(n) compound is a group of atoms held together by chemical bonds.

While unproven, it uses facts to support part of a conclusion. it is still factual and has predictive power, however.

It could possibly be beneficial if the experiment is successful.

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 d.