The thermal isomerization of cyclopropane to propene has a rate constant of 5.95 × 10−4 s−1 at 500oc. calculate the value of the gibbs energy of activation, ∆g⊖‡ for this reaction.

Gibb  free   energy  of   activation  is  =  -RT  in  K

R=   gas  constant=8.314  j/mol
T=temperature=  500+273=  773  K
K=rate  constant
gibb   free  energy  is therefore=  - 8.314 j/mol /k  x  773k in  5.95 x10^-4=  471730.94j/mol

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later