Co2 + h2 -> co + h2o what is being oxidized?

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

What substance has a mass of 9.5g and volume of 2.1cm^3

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