Manganese

Manganese History Manganese (symbol Mn) is the fifth most abundant metal in the world. It is not found as a pure element in nature, rather it is bound to oxygen or other elements. Johann Gottleib Gahn, a Swedish mineralogist, is credited as the first person who was able to isolate the metal Mn from the dioxide MnO2. (chemistry explained). Manganese has a great many uses in the industrial world. Manganese is used in the production of iron, steel, dry cell batteries, coins, as an additive

of corporate and government officials—but a few stories stand out. In Marietta, Ohio, a steel plant called Eramet has been pumping the air full of a toxic chemical called Manganese. The chemical is known to cause health problems, particularly damaging to neurochemical and motor function. When a study confirmed that manganese concentrations in the area were much higher than

Manganese and Iodine are both elements on the periodic table. Both are used greatly in our lives every day. Manganese is a brittle metallic element that is important in many industrial processes. It was discovered by Carl Wilhelm Scheele in 1774. Manganese was given its name from the Latin word magnes meaning magnet. Manganese belongs to a set of elements called the transition metals. Manganese is the 12th most common element found in the earth’s crust and is the 4th most common medal mined

For many years now batteries have been our primary source of energy, acting as the driving force behind our business’, transportation and electronic devises, ensuring our day-to-day lives run smoothly. It is safe to say that they play a fundamental role in powering our 21st century lives, but have you ever stopped to wonder where this energy might come from, or just how batteries work? Alkaline batteries, in particular, have provided us with energy on the go for over two centuries, with the global

been an extensive research on the solute elements for the Mg-Al alloys for achieving the grain refinement. Some of the solute element’s effect on the grain refinement are discussed in this review paper. 1.2.1 Effect of manganese on the grain refinement in Mg-Al based alloys: Manganese has been used as iron remover in the magnesium alloys [4-4]. Tiner [4-5] had investigated the effect of 0.19% or more of Mn in Mg-Al alloys and found that superheating has given grain

Determination of the Composition of Cobalt Oxalate Hydrate Experiment 12 Robbie Kinsey Partner: Debnil Chowdhury Chem. 1312-D TA’s: Russell Dondero & Sylvester Mosley February 9, 2000 Purpose The purpose of this lab was to determine the percent cobalt and oxalate by mass, and with that information, the empirical formula for cobalt oxalate hydrate, using the general formula Coa(C2O4)b.cH2O. Procedure The powdered cobalt oxalate

Chemistry Practical Investigation-Volumetric Analysis Discussion: Based on the data obtained, the precision of obtaining the data is high. This is because the data shows closeness between one another. It shows the reproducibility of a set of measured quantity. The data obtained showed three concordant titres where the titre volumes differ by less than 0.1mL from the highest to the lowest. The variability of a measurement cannot be determined from a single measurement, therefore multiple measurements

Introduction Glucose is very important in our daily lives. It gives us energy to carry out all of our activities. Cells in our bodies need glucose to respire and in the process release the energy we need. Glucose is also a type of carbohydrate. It has a chemical formula of C6H12O6 and is a monosaccharide reducing sugar (Kolej Mara Banting – Students’ Handbook for Biology HL Year 1). It is the simplest form of carbohydrate. In this experiment, sulphuric acid, H2SO4 and potassium permanganate

The objective of this procedure is to produce a sample of p-acetamidobenzoic acid from the oxidation of p-acetotoluidide with potassium permanganate. Procedure Part A- Preparation of p-Acetamidobenzoic Acid • In a 250 mL Erlenmeyer Flask, 5 g (0.02 mol) of magnesium sulfate crystals were mixed with 1.9 g (0.013 mol) of p-acetotoluidide in 125 mL of de-ionized water. The resulting solution was placed on a hot plate and was steadily boiled until the solution reached 85°C, or until the solution reached

When most people hear an airplane in the air they may look up and see just another airplane. They don’t think about how the airplane evolved. They also don’t consider any of the material it requires to achieve this most amazing feat. It’s just another aircraft carrying people or items to their destination. The journey began, as most of us have been taught, in 1903 by the Wright brothers when they flew their airplane for the first time. The aircraft was crudely constructed, using modern materials