How many moles of oxygen are produced if 11.0 mol of al are produced?

Which of these conditions most likely produces an unstable isotope?

Geothermal energy for industrial use is available almost anywhere. a.true b.false

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