Study the following unbalanced half-reaction. which equation represents the balanced half-reaction? h2o2 > h2o
e- + h+ + 2h2o2 h2o
2e- + 2oh- + h2o 2h2o2
2e- + 2h+ + h2o2 2h2o
3e- + 2h+ + 2ho- 4h2o
4e- + h2o2 2h2o +4e-

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 must occur for air masses to form fronts

Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?