Which diagram best illustrates the ion molecule attractions that occur when the jobs of NaCl(s) are added to water

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

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.

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work