Given the balanced equation:
2ki f2 → 2kf i2
which type of chemical reaction does this equation represent?
(1) synthesis
(2) decomposition
(3) single replacement
(4) double replacement

Which of these best describes the scientific process

0.66y = 0.9x + 0.48 if y has a value of 108.45 what is the value of x?

Plz mark brainliest 30 points1) 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?