Que tiene en común los elementos, compuestos, las mezclas homogéneas y las mezclas heterogénea ?

The answer is !

Contained in chromosomes which are located in the nucleus of the cell.

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.