20. An aqueous solution that has a hydrogen ion
concentration of 1.0 x 10-8 mole per liter has a pH of
A) 8, which is acidic B) 8, which is basic
C) 6, which is basic D) 6, which is acidic
b

Two things that biomedical has invented or innovated

Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d.the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge

Describe the forces both attractive and repulsive that occur as two atoms move closer together.