Can someone explain this to me please?

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

Define the kinetic molecular theory