BaCl2 crystallizes such that the Ba2+ ions are in a face-centered cubic arrangement and the Cl- ions are in the holes of the lattice (fluorite structure). How many Cl- ions are present in one unit cell of this crystal?

Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

What happens to isotopes that are unstable?

What type of reaction fuels the processes seen here?