The pH of an aqueous solution of hydrochloric acid is 2. What is the pH of the solution after the addition of 10 g of sodium chloride?

Express the following number in scientific notation. 0.026890 =

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.

Draw the structure for 5-isopropyl-2-methyl-3-nonene