Iodine-131 is a radioactive isotope with a half-life of 8 days. how many grams of a 64 gram sample of iodine-131 will remain after 24 days?

a) 56g
b) 48g
c) 32g
d) 8g

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?

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged

Stage in which a typical star has completely stopped fusion