When aniline is treated with molecular bromine in the presence of a mild base (NaHCO3), polyhalogenation occurs. However, when aniline is treated with molecular bromine in the presence of a strong Lewis Acid like FeBr3, no reaction takes place. Briefly explain this difference in reactivity.

Can you reduce your impairment by drinking coffee or cold showers? true or false?

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j