What is the ion symbol for Lithium?

How air particles exert a pressure on the inside of the balloon

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

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.