Fill in the boxes with the product(s) for the following reactions. draw only the predominate regioisomer and indicate the stereochemistry where appropriate. if a racemic mixture is formed, you may indicate this using a wavy line mw or mark the chiral center with an asterisk (*), and write racemic in the box. naoh/a h20*/a 1) phmgbr (excess) et 1) dibalh, -78°c 2) h20+ 2) h2so4 (conc.)/a 1) phli (excess) 2) h30* 1) nabh4, h2o 2) h30*/a menh2 (excess) nabha h2o 1) lah/the 2) h30* meona/meoh 1) 2 mol ch3mgbr/et20 2) h30*

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied

c. 4.54 x 10–12 j happens to be correct