A buffering agent can be either a weak acid or weak base. Buffering agents are usually added to water to form a buffer solution, which only slightly changes its pH in response to other acids and bases being combined with it, particularly a strong acid or a strong base.
D. B. Cooper is a media epithet popularly used to refer to an unidentified man who hijacked a Boeing 727 aircraft in the airspace between Portland, Oregon, and Seattle, Washington, on November 24, 1971. He extorted $200,000 in ransom and parachuted to an uncertain fate. Despite an extensive manhunt and protracted FBI investigation, the perpetrator has never been located or identified. The case remains the only unsolved air piracy in commercial aviation history. While available evidence and a pre
For others of this name, see Jacki Cooper and John Cooper (disambiguation). John Cooper, Jr. (September 15, 1922 â May 3, 2011), known as Jackie Cooper, was an American actor, television director, producer and executive. He was a child actor who managed to make the transition to an adult career. Cooper was the first child actor to receive an Academy Award nomination.