Essays Tagged: "german chemist"

Aspirin

. This ingredient grows in small roots, leaves, flowers and fruits on plants.About 100 years ago, a German chemist, Felix Hoffmann, set out to find a drug that would ease his father's arthritis withou ...

(3 pages) 90 1 4.3 Dec/1996

Subjects: Humanities Essays > Health & Medicine

Chemical reactions

that it was possible that individual particles made up matter.Later, in the Seventeenth Century, a German chemist named Georg Ernst Stahl was the first to postulate on chemical reaction, specifically ...

(8 pages) 210 0 4.1 Mar/2002

Subjects: Science Essays > Chemistry

Uranium.

d the atomic mass of uranium is 238.0289. Miners called it Pechblende meaning, Pechblende, from the German words pech, which means either pitch or bad luck, and blende, meaning mineralUranium's first ... neralUranium's first full analysis was done on 1789 by Martin Klaproth, a self-taught well educated german chemist.Klaproth, having extracted from pitchblende what he called 'a strange kind of half me ...

(2 pages) 44 0 3.7 Apr/1997

Subjects: Science Essays > Biology

Uranium.

d the atomic mass of uranium is 238.0289. Miners called it Pechblende meaning, Pechblende, from the German words pech, which means either pitch or bad luck, and blende, meaning mineralUranium's first ... neralUranium's first full analysis was done on 1789 by Martin Klaproth, a self-taught well educated german chemist.Klaproth, having extracted from pitchblende what he called 'a strange kind of half me ...

(2 pages) 53 0 4.3 Apr/1997

Subjects: Science Essays > Chemistry

About the components, history, etc. of titanium

named after Menaccan in Cornwall (England). Several years later, the element was rediscovered by a German chemist, Klaproth. The pure elemental metal was not made until 1910 by Matthew A. Hunter. He ...

(2 pages) 53 0 3.5 Mar/2003

Subjects: Science Essays > Chemistry

Haber Process.

During the World War I, Germany was dependent on sodium nitrate deposits in Chile for the nitrogen-containing compounds need ... deposits in Chile for the nitrogen-containing compounds needed to make explosives. Seeking to free Germany from dependence on Chile, a German chemist named Fritz Haber examined the direct combination ...

(2 pages) 64 1 3.3 Jun/2003

Subjects: Science Essays > Engineering > Chemical Engineering

Chemical reations is an essay on chemical reactions in Chemistry.

that it was possible that individual particles made up matter.Later, in the Seventeenth Century, a German chemist named Georg Ernst Stahl was the first to postulate on chemical reaction, specifically ...

(8 pages) 124 2 4.5 Nov/2003

Subjects: Science Essays > Chemistry

The Wittig Reaction - Lab Report

nd inexpensive version of the reaction is the Wittig-Horner reaction (1).ABSTRACTGeorg Wittig was a German chemist and Nobel Prize winner in 1979 for the Wittig reaction (1). He was born in Berlin, on ...

(4 pages) 80 0 3.0 Apr/2004

Subjects: Science Essays > Chemistry

History Of Titanium

iven the name titanium (after the Titans, in Greek mythology, the sons of the Earth Goddesses) by a German chemist, Martin Kloproth.WHAT IS TITANIUM?Titanium has an atomic number of 22, meaning it has ...

(1 pages) 41 1 4.2 May/2004

Subjects: Science Essays > Chemistry

History Of Titanium; Speeches

achanite after the local parish of Menaccan. A few years after Gregor's discovery, M.H. Klaproth, a German chemist, separated TiO2 from the mineral rutile. Klaproth named the new element titanium afte ...

(2 pages) 46 0 4.6 May/2004

Subjects: Science Essays > Chemistry

Titanium the Metal of tomorrow

achanite after the local parish of Menaccan. A few years after Gregor's discovery, M.H. Klaproth, a German chemist, separated TiO2 from the mineral rutile. Klaproth named the new element titanium afte ...

(2 pages) 42 1 4.4 May/2004

Subjects: Science Essays > Chemistry

Chemical Reactions

that it was possible that individual particles made up matter.Later, in the Seventeenth Century, a German chemist named Georg Ernst Stahl was the first to postulate on chemical reaction, specifically ...

(7 pages) 38 0 0.0 Feb/2006

Subjects: Science Essays > Chemistry

Periodic table

The periodic table was first discovered about 200 or more years ago.In 1869, the German chemist, Julius Lothar Meyer and the Russian chemist, Dmitri Mendeleev, separately published ...

(5 pages) 35 0 4.5 Jun/2006

Subjects: Science Essays > Chemistry

Aspirin And Acetaminophen

the synthesis of aspirin is salicylic acid. It is created from phenol by a process discovered by a German chemist, Hermann Kolbe. This process is called The Kolbe Synthesis.2 Sodium phenoxide is heat ...

(4 pages) 35 0 0.0 Sep/2001

Subjects: Science Essays > Chemistry

TITANIUM

um was discovered by William Gregor in 1789, who named the element menachite. Three years later the German Chemist Martin Heinrich Klaproth rediscovered the element and named it "Titanium"� as ...

(1 pages) 12 0 0.0 Nov/2001

Subjects: Science Essays > Chemistry

Preparing of Aspirin

synthesized a primitive form of aspirin, a derivative of salicylic acid. In 1897 Felix Hoffmann, a German chemist working at theBayer division of I.G. Farber, discovered a better method for synthesiz ...

(6 pages) 47 2 3.8 Dec/2007

Subjects: Science Essays > Engineering > Chemical Engineering

Cocaine

proposed to slowing down cocaine from being imorted into southern Florida.In the mid-19th century a German chemist, Albert Niemann, first extracted pure cocaine from the leaf of the Erythroxylon coca ...

(1 pages) 345 0 0.0 Feb/2008

Subjects: Social Science Essays > Controversial Issues > Drugs & Alchohol

Ragweed

e naming of an important constant, Avogadro's number, N0 = 6.022137 x 1023 Balmer, Johann Jakob -- (German chemist) 534. Discovered in 1885 that hydrogen atoms emit a series of lines in the visible re ... n the film badges that are worn to monitor exposure to pentetrating radiation.Bednorz, J. Georg -- (German physicist) 831. Responsible for the discovery of the higher transition temperatures among per ...

(26 pages) 24 0 0.0 Feb/2008

Subjects: Science Essays > Chemistry

Scientenstences

e naming of an important constant, Avogadro's number, N0 = 6.022137 x 1023 Balmer, Johann Jakob -- (German chemist) 534. Discovered in 1885 that hydrogen atoms emit a series of lines in the visible re ... n the film badges that are worn to monitor exposure to pentetrating radiation.Bednorz, J. Georg -- (German physicist) 831. Responsible for the discovery of the higher transition temperatures among per ...

(26 pages) 56 0 5.0 Feb/2008

Subjects: Science Essays > Chemistry

Substituents on Aromatic Aldehydes and How They Affect E/Z Selectivity in the Wittig Reaction

M-nitrobenzaldehydeEthyl-3-(4-nitrophenyl)acrylate from P-nitrobenzaldehydeIn 1954, Georg Wittig, a German chemist, discovered the Wittig Reaction. In 1979, Wittig won a Nobel Prize in Chemistry due t ...

(20 pages) 20 0 3.0 Jan/2010

Subjects: Science Essays > Chemistry