Draw 1,3,5,7-cyclononatetraene (the neutral molecule). does it have a huckel number of pi electrons? b. show how 1,3,5,7-cyclononatetraene might be converted to an aromatic species. (consider the corresponding ions formed by removal of a hydrogen atom or hydride.)

A6.10 m nacl can be made by adding [x]g of nacl to a container and making the volume of water up to the 1.00 l line

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line