If anyone helps me I will help them with any question and the right answers ok a-ok

Ethene molecular fórmula= c2h4molecular weight = 29.046g/molhope it : )

Your awser would be a acetone

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.