What is [OH–] for a solution at 25°C that has [H3O+] = 2.35 × 10–3 M?

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

Can someone me with 6 to 10 plz this is for masteries test.