The concentration of hydrogen ions in an aqueous solution is 1.0 × 10-5 M at 298 K. What is the concentration of hydroxide ions in the same solution? A. 1.0 × 10-14 M

B. 1.0 × 10-9 M

C. 1.0 × 10-7 M

D. 1.0 × 10-5 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

Which of these is a physical property

Hey, could someone me answer this? much appreciated!