The height of energy barrier is always measured relative to the energy of the reactant or starting material.
32.
The process of getting to the top of the activation energy barrier to the transition state is endergonic.
33.
But any free energy barrier must be passed by a fluctuation, or nucleation process, in order to access it.
34.
This means that an energy barrier of \ Delta E on the energy spectrum is exponentially difficult to overcome.
35.
Nitrogenase acts as a catalyst, reducing this energy barrier such that the reaction can take place at ambient temperatures.
36.
However, at higher temperatures the molecules have enough energy to cross over both energy barriers leading to the products.
37.
The Eagle is surrounded by an energy barrier, but with some struggle, Alan is able to escape the trap.
38.
The reaction occurs via a N?! C addition mechanism because there is a small energy barrier to overcome.
39.
The problem consists of solving the one-dimensional time-independent Schr�dinger equation for a particle encountering a rectangular potential energy barrier.
40.
If the free energy barriers are not high enough, the memory device can even switch without having to do anything.
