What is the change in enthalpy for a reaction if the reactants have 270 kJ of energy and the products have 150 kJ of energy

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

Give the orbital configuration of the phosphorus (p) atom.

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.