Explain why the invention of the microscope was important in the study of cells

How many molecules are found in 1.32 mol of nacl?

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

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.