Using a mechanism explain why more than one alpha proton is necessary on the nucleophilic partner in a normal claisen condensation of two esters to form a product (8 marks). there is one set of conditions whereby a claisen condensation of esters is possible where only one alpha proton is available, what are these conditions (2 marks)?

Agood hypothesis includes which of the following? a: prediction b: data c: uncertainty d: conclusion

How are elements arranged in a periodic table

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?