what is the activation energy, $e_a$, for this reaction? 90 j 50 j 80 j 30 j

what is the activation energy, $e_a$, for this reaction? 90 j 50 j 80 j 30 j
Answer
Explanation:
Step1: Identify activation energy on graph
Activation energy is the energy difference between reactants and transition - state.
Step2: Read values from graph
Assume reactant energy is 30 J and transition - state energy is 80 J. $E_a=80 - 30$
Answer:
50 J