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Definition of eau. plural. eaux. \ËÅ(z)\. : a watery solution (as of perfume); especially : a liqueur of moderate density and sweetness.
Energy of activation (EA) 1  amount of energy that reactants must absorb to start a chemical reaction. 2  can be thought of as an energy barrier. 3  since most reactions require energy to get started.  illustrated with jumping bean (JB) 1  analogy. solution for speeding up a reaction lies in enzymes.  protein molecules that serve as biological catalysts.