is 0.11 L / (mol s). What is the concentration of ester, CH3COOC2H5, 15 minutes after the ester is added to aqueous sodium hydroxide so that the initial concentrations are [NaOH]

D. most models represent a real world object in a simpler way

The molecules contain like 54 of water 

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.