(Encyclopedia) tetraethyl leadtetraethyl leadtĕtˌrəĕthˈəl [key], (C2H5)4Pb, viscous, colorless, poisonous liquid. It is an organometallic compound prepared by reacting ethyl chloride with a sodium-…
The Question: Which U.S. state produces the most coal? The Answer: When it comes to coal mining in the United States, Wyoming leads the way. The Cowboy…
Leading causes of death differ somewhat by age, sex, and race. In 2003, as in previous years, accidents were the leading cause of death for those under 34…
(Encyclopedia) lead, metallic chemical element; symbol Pb [Lat. plumbum]; at. no. 82; at. wt. 207.2; m.p. 327.502℃; b.p. about 1,740℃; sp. gr. 11.35 at 20℃; valence +2 or +4. One of the oldest metals…
Read about the resignation of Hosni Mubarak and find information about Egypt and the Middle East by Beth Rowen Hosni Mubarak On Feb. 11, 2011, embattled Egyptian…
Ahmed Tejan Kabbah Lawyer Leads Troubled Sierra Leone by David Johnson President Kabbah. (Source/AP)Although he took office in 1996 with 60 percent of the vote to become Sierra Leone's first…
