Four liters of helium are released into a weather balloon at sea level (pressure 101.3 kPa), To what volume does the balloon expand as it rises to an altitude of 20 km (pressure = 8
kPa)?
Calculate the final ressure in the cylinder of a car engine if the original yolume was 450

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?

Is laundry detergent an acid or a base?

What will most likely happen when two bromine atoms bond together?