a chemist reacts 20 mol H2 with 20. mol O2 to Produce water. assuming all of the limiting reactant is converted to water in the reaction. calculate the amount of each substance present after the reaction

Which of these best describes an ionic bond?

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.

The element that has the greatest electronegativity is