There is, however, a very efficient way to make terminal alkenes employing the Wittig reaction. The most efficient route will be determined by the SN2 reaction of the triphenyl phosphine with the alkyl halide. Retrosynthetically analyze the synthetic route where the ylide is ultimately made from the less crowded alkyl halide. Draw the skeletal structure of the indicated starting material.

Long term exposure to waves can cause sunburns and skin cancer. a) visible b) infrared c) gamma rays d) ultraviole

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?

If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?