The middle layer, known as the aqueous layer, is made up primarily of water. It provides hydration and washes away contaminants. It also contains proteins that nourish the cornea and electrolytes ...

Iodine in water is yellow, and when added to the food color the result is a green solution. When this aqueous solution is extracted with organic solvents (hexane and dichloromethane), the iodine is ...

When this aqueous solution is extracted with organic solvents (hexane and dichloromethane), the iodine is drawn into the organic layer, leaving a turquoise aqueous layer and turning the organic layer ...