Sulfur

troposphere. It’s very important to note that water has a natural acidity, it’s the excess of oxides that cause the problem. But how did those emissions and oxides make it there? Naturally, compounds like carbon dioxide(CO2), nitric oxide(NO), and sulfur dioxide(SO2), are released through just a few processes: decomposition of organic matter, electric discharge(reactions with lightning and the ozone), as well as release of gasses in volcanic eruptions. However, these only contribute to the natural

31. Biological Oxygen Demand ( B.O.D) Introduction: Biochemical Oxygen Demand (B.O.D.) is the most important parameter to determine the level of pollution in lakes and streams, their self-purification capacities, assess the biodegradable organic load of the wastewaters for designing wastewater management or treatment plants and thereafter to evaluate their efficiency or finding out the assimilative capacity of a water body. B.O.D. is an empirical standardized laboratory test defined as the amount

The Chemistry of Painting Cars It is necessary to paint cars because the paint protects the steel of the car from corrosion, paint fills and smooths out any imperfections in the steel surface and it provides a durable, decorative, glossy appearance. If rusting continually takes place the car becomes unsafe. When water and oxygen come in contact with the metal of the car surface, several redox reactions happen. The oxygen is reduced to hydroxide ions and iron

Introduction Magnesium sulphate is used for a variety of purposes i.e. bath salt and as a laxative. It is a hydrated salt and is required to be stored in a sealed container to maintain the water. Magnesium sulphate in a solution is sprayed on plants or poured on soil, as magnesium is vital for plant growth and respiration, it forms part of the chlorophyll molecule which is utilised by plants to convert sunlight into energy. This experiment was performed to determine the degree of hydration for a

Aeromonas hydrophila is a heterotrophic, gram negative, rod shaped bacteria surviving in both aerobic and anaerobic environment thus ferments both glucose and sucrose. These are ubiquitous bacteria meaning those appearing everywhere. These are also opportunistic organisms meaning that these attack on the organisms that are already weakened due to attack by bacteria or virus. Thus people with impaired immune system are more prone to attack by these organisms. Also young children are more easily affected

Selenium Essential to the human body, selenium is a trace element which defends against oxidation and is important for our immune response and for proper thyroid function. Located in Group 16 of the Periodic Table of Elements, selenium has the following element information: Atomic Symbol - Se Atomic Number - 34 Atomic Mass - 78.96 Discovered in 1817 by Swedish Scientists, Jacob Berzelius and JG Gahn, selenium was first thought to have been tellurium - an earlier discovered element. After further

Discussion: As figure 1 shown, ammonium sulphate have different concentrations from 0.1mol in 200ml water to 0.4mol. When concentration is increasing, the average change is from 0.26g-0.1g. Also Ammonium Dihydrogen Phosphate have the same inverse relationship that when the concentration is increasing, the weight of change decreases from 0.5-0.06g as shown in figure…. In addition, the higher the concentration, the more effective the flame retardant is. Both ammonium sulphate and ammonium dihydrogen

Sulfanilamide, also referred to as sulfa, was a drug sold in powder and tablet form used to treat infections such as pneumonia, meningitis, and strep throat. In the 20th century, these bacterial infections could easily take the life of anyone. That is why sulfanilamide became so popular throughout the country. Sulfanilamide was invented by a German microbiologist, Gerhard Domagk. It was a red dye derivative that he had discovered that would cure the contagion. The drug was safe until a salesman from

Does the amount of surface area of a roughly 1 millimetre thick piece of magnesium metal in equiangular quadrilateral cuboid or ”strip” form and of mass close enough to assure a relatively low measure of standard deviation when compared with other specimens from the pre-determined collection of magnesium metal it came from proportionally affect the magnitude of the rate of its reactions when surrounded by a solution of hydrochloric acid? I believe that yes, the amount of surface area of a piece

extremely acidic. One of the most common acids that is absorbed into the rain is sulfur trioxide. This acid is produced from the vast amount of human activity on our earth. Nitrogen and sulfur are two main airborne elements that cause this dangerous precipitation of acids. The scientific study of acid rain has brought researchers to believe that sixty-five to seventy percent of acid rain formation is caused by sulfur dioxide. Various kinds of nitrogen oxides cause the remaining percentage of acid