Essays Tagged: "mixtures"

Analytical Chemistry

composition of materials, which may be solids, liquids, gases, pure elements, compounds, or complex mixtures. In addition, chemical analysis can characterize materials but determining their molecular ...

(4 pages) 116 0 4.1 Jan/1996

Subjects: Science Essays > Chemistry

Should Manganese Nodules be Exploited as a Source of Metal? Should we continue exploiting manganese nodules as a source of metal, taking into consideration all the moral aspects.

Manganese nodules are small, dark, potato-shaped mixtures of different minerals, containing sources of useful metals such as manganese, iron, copper, ...

(7 pages) 61 0 3.7 Dec/2002

Subjects: Science Essays > Chemistry

Aluminum. Number

with other soft, weak metals such as copper and tin that scientists refer to as "poor" metals. But mixtures of aluminum and other metals (alloys) can create metals as strong as steel.Wohler is genera ...

(3 pages) 93 2 4.4 Oct/2003

Subjects: Science Essays > Chemistry

A description of the start of the COCA-COLA company.

t a local pharmacy in 1886 John Pemberton was searching for a cure for headaches, he formed several mixtures but only one stands out; that is the syrup he created for what we now call Coke. The syrup ...

(1 pages) 95 3 4.0 Nov/2003

Subjects: Businesss Research Papers

Freezing Point Depression Determination SCIENCE LAB EXPERIMENT

he procedure will consist of obtaining cooling curves for the pure substances and a number of their mixtures. A cooling curve is constructed by melting a sample, then allowing it to cool, measuring th ...

(8 pages) 50 1 3.8 May/2004

Subjects: Science Essays > Chemistry

Fuels for the Future

is petrol that can be burned (to provide heat or power). When the fuel is burned, it emits complex mixtures of compounds that lead to the formation of smog and other potentially toxic pollutants. Of ...

(6 pages) 231 0 1.0 Jun/2004

Subjects: Science Essays > Chemistry

Everything About Organic Compounds

eing only slightly richer in the more volatile (lower boiling point) component. If distillations of mixtures with similar volatilities are repeated, improved separations of the components can be achie ...

(11 pages) 46 0 3.0 Jun/2004

Subjects: Science Essays > Chemistry

The Atom

e viewed as a mixing of water particles with air particles. He performed a series of experiments on mixtures of gases to determine what effect properties of the individual gases had on the properties ...

(4 pages) 46 1 5.0 Jul/2004

Subjects: Science Essays

Fear of Lost

gradually with a small fireworks.Now the place was all dark, the music is louder and the beautiful mixtures of fireworks lighten up the sky like the daylight. I was watching everything around me forg ...

(2 pages) 39 3 3.7 Sep/2004

Subjects: Literature Research Papers > Creative Writing

Qualitative Analysis of Buffer Solutions

roduction:In this experiment procedures were devised that enabled us to separate, properly identify mixtures of six different cations. After each cation is identified the procedures that were devised ...

(6 pages) 48 0 4.4 May/2005

Subjects: Science Essays > Chemistry

Beautiful body...

ll ornaments. Warriors who live in Kenia and Tazmania of Masay people covre their hair with strange mixtures to achieve certain hairdress and color.Egzamples of decorating body do not have to be looke ...

(3 pages) 49 1 3.0 May/2005

Subjects: Humanities Essays > Health & Medicine > Health & Fitness

Investigation into the Use of Short-Column Reversed-Phase LC in the Determination of log P Values

CIntroductionIncreasingly, the determination of low concentrations of active ingredients in complex mixtures, sold for human consumption, has become more necessary. Regulations have imposed strict lim ... ingle operation. Chromatography is the most widely used technique for the analysis of non-inorganic mixtures. Gas chromatography (where the sample must be volatilized) and liquid chromatography (where ...

(6 pages) 17 0 0.0 Jun/2005

Subjects: Science Essays > Chemistry

Investigation into the Use of Short-Column Reversed-Phase LC in the Determination of log P Values 2.

individual constituents of a complex natural product.IntroductionGas chromatography (GC) separates mixtures into their individual components and is particularly useful for volatile and semi-volatile ... can be analyzed under identical conditions, GC profiles can also be used as fingerprints of complex mixtures.TheoryThe GC consists of an injection block, a column, and a detector. An inert gas flows t ...

(6 pages) 26 1 4.2 Jun/2005

Subjects: Science Essays > Chemistry

The European Porcelain.

alled porcelain. This was not the true Chinese porcelain but a soft-paste porcelain made of various mixtures of white firing clay and glass, or frit. The manufacture of this soft-paste porcelain sprea ...

(5 pages) 30 0 4.3 Oct/2005

Subjects: Art Essays > Design Arts

Photosynthesis lab report

avelengths and degrees of intensity during photosynthesis when chloroplast is exposed to light. The mixtures of DCPIP with water, PO4 buffer, and chloroplast will be prepared in a number of cuvettes. ...

(7 pages) 129 0 0.0 Feb/2007

Subjects: Science Essays > Biology > Plant Biology


Purpose:In this lab experiment the mixtures of organic compounds are separated using liquid chromatography. TLC separation takes pace o ... nd in annatto seeds in this experiment. Although this technique is often used to separate uncolored mixtures of compounds in this case colored compounds are used so that it is possible to observe the ...

(4 pages) 33 0 4.8 Feb/2007

Subjects: Science Essays > Chemistry

Comparative Essay: "Panopticism" vs. "1984"

ays of exercising power over men, of controlling their relations, of separating out their dangerous mixtures. The plague stricken town, transversed throughout with hierarchy, surveillance, observation ... s put on the citizens through control of relation, surveillance, and separating out their dangerous mixtures, which helps Big Brother obtain a government system. Although this “utopian” soci ...

(2 pages) 39 0 0.0 Mar/2007

Subjects: Literature Research Papers > European Literature

Medieval Music

-pitched was the music of choice in the Middle Ages. Music expanded from there and turned into many mixtures of music. The music could not have been played unless there was an instrument to play it on ...

(2 pages) 31 0 4.0 Apr/2007

Subjects: Art Essays > Music History & Studies


. Later on Lavoisier became a chemist. He specialized in chemical analysis seperating elements from mixtures and measuring out the elements of compounds. The first papers Lavoisier wrote were on miner ...

(1 pages) 735 0 0.0 Sep/2001

Subjects: Science Essays > Chemistry

The Relationship between Heat and Amount of Reaction

perature of the reaction mixture rising:H+(aq) + OH-(aq) H2O(l)In this experiment, several reaction mixtures will be made, each containing various concentrations of acid and hydroxide solutions. As th ... h containing various concentrations of acid and hydroxide solutions. As the volumes of the reaction mixtures are the same, the temperature changes are relative measures of the quantity of heat release ...

(1 pages) 15 1 4.0 Oct/2007

Subjects: Science Essays > Chemistry