Which equations represent precipitation reactions? more than one can be chosen. a. na2s + febr2 → 2nabr + fes b. mgso4 + cacl2 → mgcl2 + caso4 c. lioh + nh4i → lii + nh4oh d. 2nacl + k2s → na2s + 2kcl e. agno3 + nacl → agcl + nano3

Zinc + lead(ii) nitrate yield zinc nitrate + leadwhat's the chemical equation for this?

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

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?