What is the mass of 3.50 moles of silicon dioxide

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

What happens to isotopes that are unstable?

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