The CN Tower-A history of firsts / La Tour CN-Les grandes premieres-PremiÃ¨res: duration 111. seconds
CDA Technical Institute (CDA), formerly Commercial Diving Academy, is a federally accredited school. The second factor for a prospective student to consider is the additional accreditations the school offers. The Association of Commercial Diving Educators (ACDE) offers both an accreditation and a certification.
Acetic anhydride. Acetic anhydride, or ethanoic anhydride, is the chemical compound with the formula (CH3CO)2O. Commonly abbreviated Ac2O, it is the simplest isolable anhydride of a carboxylic acid and is widely used as a reagent in organic synthesis. It is a colorless liquid that smells strongly of acetic acid, which is formed by its reaction with moisture in the air.