Why is cubic zirconia not a mineral, but a diamond is? They look a lot alike. (asap this test is timed)

State the formula for density in words and mathematical symbols

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

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.