Task: Text Categorization
Input (English): The Vyazovkin MFK technique allows for the calculation of this quantity in terms of the conversion rate. In the rate-process theory for viscosity developed by Eyring, an analogue of this quantity is measures the formation of "holes" which fluid molecules can occupy. For gas phase reactions, this quantity is equal to the enthalpy of formation of the transition state minus 2 RT, and the height of a potential barrier in a reaction profile is analogous to this quantity. It appears in the exponential term of the Arrhenius equation, enzymes and catalysts lower this quantity of a reaction. For 10 points, identify this energy which the reactants must overcome before they can proceed to the products of the reaction.
Output (English): Science