What is the difference between speed and velocity? A. Speed is velocity with direction
B. Velocity is speed with direction.
C. Speed can never be constant, velocity can be constant.
D. Velocity can never be constant, speed can be constant.

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.

What information does a complete ionic equation give that the balanced equation doesn’t show?

The activation energy for a(n) is quite large and usually takes extra energy from the environment, it is normally not a natural spontaneous process. combustion reaction endothermic reaction exothermic reaction catalyzed reaction