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External link to Synthesised by living organisms
Chemistry

Synthesised by living organisms

Definition of biopolymer: Biopolymers are naturally occurring polymers which are synthesised by living organisms. This synthesis can occur either internally within an organism’s structure, or externally in appropriate conditions. The term biopolymer also encompasses those polymers which are produced by the physical or chemical manipulation of production environments. However, depending on the term’s origination, it does not strictly include those polymers produced by biological manipulating. […]

External link to Ethylene glycol
Chemistry

Ethylene glycol

Summary Ethylene Glycol is a much sought after organic compound belonging to the diols family. It is colourless, odourless and is miscible in water and most organic compounds. It was first synthesized by a French chemist, Charles Wurtz, in 1859. Even though it did not gain commercial importance at the time, during World War I, the Germans used ethylene glycol as a substitute for glycerol […]

External link to Hydrogenating ability of Wilkinson’s catalyst
Chemistry

Hydrogenating ability of Wilkinson’s catalyst

Wilkinson’s catalyst was prepared from rhodium (III) chloride and refluxed in ethanol with triphenylphosphine, with a measured yield of 72.7%. The efficacy and regioselectivity of Wilkinson’s catalyst was then assessed by reaction with carvone in an atmosphere of hydrogen gas at 1 atm, and the product was analysed by 1H-NMR spectroscopy. Introduction Tris-(Triphenylphophine)chloro rhodium(I) was discovered and first profiled by Wilkinson et al in 1965, […]

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Chemistry

Microchip

INTRODUCTION TO THE TOPIC A microchip (sometimes just called a “chip”) is a unit of packaged computer circuitry (usually called an integrated circuit) that is manufactured from a material such as silicon at a very small scale. Microchips are made for program logic (logic or microprocessor chips) and for computer memory (memory or RAM chips). Microchips are also made that include both logic and memory […]

External link to Formaldehyde in green chemistry
Chemistry

Formaldehyde in green chemistry

1.0 INTRODUCTION Formaldehyde is the first member of the aldehyde family (CH2O) and is the most important aldehyde in the environment.3 It is a naturally occurring chemical and a by-product of most organisms, including human, industrial and natural processes. Formaldehyde forms from the incomplete combustion of carbon-containing materials; smoke from forest fires, in automobile exhaust, and in tobacco smoke. Atmospheric formaldehyde is formed by the […]

External link to Chemistry Essays – Essential Fatty Acids
Chemistry

Chemistry Essays – Essential Fatty Acids

A discussion on the role of essential fatty acids in human health. Introduction: Fatty acids are important components of lipids (fat-soluble components of living cells) in plants, animals, and microorganisms.  Generally, a fatty acid consists of a straight hydrocarbon chain and a terminal carboxyl (-COOH) group.  It is the carboxyl group that makes it an acid.  If the carbon-to-carbon bonds are all single, the acid […]

External link to Atomic model
Chemistry

Atomic model

History of the Atomic Model The atomic model is not a concrete, one-hundred percent accurate depiction of the atom or description of what the atom is like. We can’t base our model on actual observations of atoms, because they are too small to be seen with our most sensitive instruments. Instead, we must come up with a model of an atom that can account for […]

External link to Functioning of freeze drying equipment
Chemistry

Functioning of freeze drying equipment

1.0 Introduction This report is on the usage and functioning of freeze drying equipment. In this first chapter the principle of the sublimation process and applications of freeze drying equipement will be given. 1.1 Freeze dryers Freeze dryers are part of the group of solid-solid separating operations, this particular case of solid-solid separating operation makes use of the sublimation process. This kind of equipmentis used […]

External link to The Practice And History Of Alchemy Chemistry Essay
Chemistry

The Practice And History Of Alchemy Chemistry Essay

Alchemy, derived from the Arabic word al-kimia (ØلكيميØØ¡, ALA-LC: al-kÄ«miyā’), is both a philosophy and an ancient practice focused on the attempt to change base metals into gold, investigating the preparation of the “elixir of longevity”, and achieving ultimate wisdom, involving the improvement of the alchemist as well as the making of several substances described as possessing unusual properties. The practical aspect of alchemy can […]

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