How many moles of each element 19.5g platinum

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.

Adepositional also feature that forms where a stream enters a lake or an ocean is a

How do you determine the percent yield of a chemical reaction