2.26 g of liquid water at 23.5 ◦c was com- pletely converted to ice at 0 ◦c. how much heat was (absorbed/released) by the system during this process?

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.

Ansa leaf changing color in autumn;