Iron ore

its physical properties. The iron was separated using a magnet and the salt was removed because it was soluble in water, while the remaining sand was not. The mixture in its tray weighed 51.61 grams. The container weighed 2.51 grams, so the mixture alone weighed 49.10 grams. Running a magnet over the mixture successfully removed the iron. It was determined that the more surface area a mixture was spread over, the more iron was picked up by the magnet. The mass of the iron collected in its tray…

Sarah Bounab BQD Experiment 2: Copper/Iron Stoichiometry Abstract: The purpose of the Copper/Iron Stoichiometry lab was to determine which of the two possible iron sulfate compounds formed when reacting aqueous copper(II)sulfate with solid iron metal. The techniques used in this lab were weighing by difference, quantitative transfer, and vacuum filtration. At the end of the experiment it was found that iron was the limiting reactant and iron(II)sulfate was a product of the reaction between…

be described using a common sulfide mineral, Pyrite (FeS2). The oxidation of FeS2 breaks down into three components, iron, sulfate, and hydrogen as seen below: FeS_2+7/2 O_2+H_2 O→Fe^(2+)+2SO_4^(2-)+2H^+ 1/2(1) These three dissolved compounds raise the acidity of the water and decrease the pH, unless neutralized. The ferrous iron, provided enough oxygen, will oxidize to ferric iron, which will reduce the pH level and act as an oxidant to additional pyrite.…

Study of Stress Corrosion Cracking (SCC) in Alloys Jiang Jingxing 1. Introduction of Stress Corrosion Cracking Stress Corrosion Cracking (SCC) is the growth of cracks with a under the combined effects of a static stress and a specific chemical environment. All SCC failures involve a macroscopic brittle performance, and the ductility of the material is reduced. It is universally acknowledged that there is no single mechanism for stress corrosion cracking (Ford, 1984). Stress…

Persuasion is a constant and rather successful method of getting people to do certain things. We are constantly being influenced and also influencing other people around us. There are several principles that help explain why humans sometimes irrationally do certain things that they wouldn’t normally do. Three of this several principles include the paradox of choice (which proves that when giving a lot of choice for any particular item, satisfaction decreases and sales decreases), scarcity (which…

To counter the adverse effects of emergency room overcrowding, the author of this paper proposes the implementation of a fast-track program. FTAs are designed to handle urgent conditions that can be treated quickly. Patients that are classified as non-urgent (ESI levels 4 or 5) are seen in a designated area within the emergency department. One could describe the FTA as an express lane to treat those with less serious illnesses or injuries. A study performed in Turkey showed that FTAs lessen…

Question 1 Part A: General Topic Properties of stainless steel • Corrosion resistant • Good tensile strength • Good low and high temperature service • Appearance • Hygienic • Has a respectable friction coefficient Corrosion resistant Stainless steel has a chromium-rich rust protective oxide thin film on the surface known as a passive layer, in which prevents corrosion by blocking oxygen diffusion to enter the passive layer and spreads rust into the internal material. As seen in Figure 1,…

5. CREATIVE PHASE Table IV Functional Development to Cost (An Incline) Function Creative Ideas & Development Estimated Cost (Rs) Provide Surface 1) Change the material to Mild Steel 40 2) Change the copper to brass 70 3) Combine function of bracket 85 (For sliding surfaces, copper facilitates lu-brication & high con-ductivity.) (A) The existing cost of the Incline + Bracket assembly = 112…

Properties of cold formed steel In general, cold formed steel has many important properties which make it significant building material, the main two properties of cold formed steel are: the yield point and the tensile strength and how are they related to formability of steel, most members in building industry are on high tensile loads, cold formed steel has a Huge tensile strength, however the ratio between the tensile strength and the yield strength is 1.2-1.8 .in addition to other good…

for the aluminum base. The adjustment knobs are based on thousandths. When it is time to break down each machine ,the stick machine uses a flux based rod. The flux is made of a carbon based compound. The welding rods can vary from brass, copper, cast iron, and stainless steel. All of these rods are made for a different type of…