Please help me I really don’t get it.
The question is on the image

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.

How many moles are in 123.0 grams of kclo4?

How many grams of phosphorus are contained in 5.09 moles of phosphorus?