(10 points) Write the exact Schrödinger equation for the molecular ion (LiH) 1+ without making the orbital approximation or the Born Oppenheimer approximation. Clearly indicate the physical meaning of each term in the equation. Write the Laplacian for electron or nucleus i as 2 i .

Compare and contrast physical changes with chemical changes.

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?

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.