Chemistry

Normally magnesium is covered with a layer of oxide, MgO, that protects magnesium from air and water. Magnesium is an important element for plant and animal life. Chlorophylls depend greatly on it.Sir Humphrey Davy discovered magnesium in 1775 at England. It was dicovered when he evaporated magnesium amalgam by mixing a moist magnesia and mercuric…

From this Experiment we demonstrated the process of proteins purification by isolating lysomes from the egg white. Both Enzyme assays and spectrophotometry were used to determine purity of the lysozyme of the samples ( A,B and C) at each stage. In order to conduct this experiment, The experiment was divided into two session; The First…

The primary structure of life can be traced to cells. all living things like plants and animals are all made up of cells. All living things have many characteristics and functions in common. Order, Reproduction, Response to the environment, Regulation, Growth and Development, Homeostasis, and Energy processing are all characteristics and functions of all living…

My report is about the element Cobalt. Cobalt is the 27th element on the periodical table and has an atomic number of twenty-seven. It has a symbol of Co. Cobalts atomic weight is 58.9332. It has a melting point of 1,490 and a boiling point of 2,900 C. Cobalt looks almost exactly like iron and…

What causes moldy bread and foods? How can you stop it? If you understand what fermentation is and how yeast survive you can answer these questions. Fermentation is the conversion of pyruvic acid into other compounds such as lactic acid or ethyl alcohol. Fermentation occurs when cells do not have oxygen. Some Organisms that use…

Melvin Calvin was born in St. Paul, Minnesota, April 8, 1911, of Russian emigrant parents. He received the B.S. degree in Chemistry in 1931 at the Michigan College of Mining and Technology, and the Ph.D. degree in Chemistry from the University of Minnesota in 1935. He spent the academic years 1935-1937 at the University of…

Oxygen, symbol O, colorless, odorless, tasteless, slightly magnetic gaseous element. On earth, oxygen is more abundant than any other element. Oxygen was discovered in 1774 by the British chemist Joseph Priestley and, independently, by the Swedish chemist Carl Wilhelm Scheele; it was shown to be an elemental gas by the French chemist Antoine Laurent Lavoisier…

It is produced by saponification of animal fats. Soaps are mainly used for bathing cleaning and washing. They also used in spinning of textile and as essential and significant of lubricating Grease. The modern soap production process is mainly based on fatty acid neutralization or fat saponification. Synthetic detergent is the main component of washing…

The study of (olive/oleic bio-alkyd resin, OOBAR) as a new biosorbent was prepared in open esterification system from an olive tree, glycerol, oleic acid and phthalic anhydride. The characterization of OOBAR was performed by using ultraviolet/visible, infrared spectra, Boehm titration, zero-point charge, iodine number, methylene blue index, density and bulk DC electrical conductivity. The data…

Abstract A simple, precise, rapid method was developed and validated for determination of diclofenac sodium in diclofenac gel by using two extraction methods which are called solid phase extraction and liquid-liquid extraction. Chromatographic separation was carried out Shim-Pack ODS (150 x 4.6µm x 5microns) column in isocratic mode using a mobile phase composing with methanol:…