fashion designerBorn: April 9, 1963Birthplace: New York City, New York When Marc Jacobs was seven years old, his father died. According to Jacobs, his mother was mentally…
(Encyclopedia) streptomycinstreptomycinstrĕpˌtōmīˈsĭn [key], antibiotic produced by soil bacteria of the genus Streptomyces and active against both gram-positive and gram-negative bacteria (see Gram'…
(Encyclopedia) gramicidingramicidingrămˌĭsīdˈən [key], antibiotic obtained from the bacterial species Bacillus brevis, which is found in soil. Gramicidin is particularly effective against gram-…
Why Do We Need Chemistry?ChemistryWhy Study Chemistry?Why Do We Need Chemistry?What Have I Gotten Myself Into?This Stuff Is Really Fun!Who Invented Chemistry?Succeeding Where Others Have Failed "…
(Encyclopedia) concentration, in chemistry, measure of the relative proportions of two or more quantities in a mixture. The concentration of a solute is very important in studying chemical reactions…
Simple Stoichiometry CalculationsChemistryStoichiometryStoichiometry: Fun to Say, Fun to Do!Simple Stoichiometry CalculationsLimiting Reactant ProblemsGas Stoichiometry Now that you've done your…
The MoleChemistryThe MoleWhat's a Mole?Molar MassConverting Between Moles, Molecules, and GramsPercent Composition Depending on your educational background and life experiences, different things…
Senate Years of Service: 1939-1949Party: RepublicanREED, Clyde Martin, a Senator from Kansas; born near Champaign, Champaign County, Ill., October 19, 1871; moved with his family to Labette…
Senate Years of Service: 1869-1875Party: RepublicanBROWNLOW, William Gannaway, (uncle of Walter Preston Brownlow), a Senator from Tennessee; born near Wytheville, Wythe County, Va., August 29…
(Encyclopedia) cgs system, system of units of measurement based on the metric system and having the centimeter of length, the gram of mass, and the second of time as its fundamental units. Other cgs…
