If 800.0 J of heat is absorbed by 120.0 g of water at 25.00
°C, what is the final
temperature when thermal
equilibrium is reached? The
specific heat of water is 4.184
J/g °C.

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.