Gilbert abs cabeo laid the foundation for which fundamental scientific law

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.

Pretty sure it's d. heterogeneous is separated by physical properties. 

When china's civil war resumed, the nationalists held an advantage because the nationalist had more soldiers  than the communist.