Oxides

54) The following graph shows three different stresses on the reaction. For each stress, numbered 1, 2, and 3 on the graph, identify the stress that has been applied to the system and using Le Chateliers principle, explain why the graph changes the way it does. 1) At the point marked #1, all three concentrations gradually increase, showing that heat is added. The addition of heat puts stress on the system, so the equilibrium shifts to the right to partially undo “stress” and produce more…

1.6 TRIBOLOGY The greek word tribo means rubbing (William 1994). It is the science of intermingling of the surfaces which are in sliding and/or rolling motion. In 1996, Tribology was first reported by Jost, England. It has 3 portions. These are A) friction B) Lubrication and C) wear. To understand the tribological behavior, it entails the knowledge of various subjects such as Physics, chemistry, Mathematics, Thermodynamics, Heat Transfer, Material science etc., Tribological problem leads to the…

Introduction Acid rain is a rain that contains a high concentration of pollutants, chiefly sulfur dioxide and nitrogen oxide, released into the atmosphere by the burning of fossil fuels such as coal or oil .It can have harmful effects on plants, aquatic animals and infrastructure, when the sulfur dioxide and nitrogen oxide, react with the water . The chemicals in acid rain can cause paint to peel, corrosion of steel structures such as bridges, and weathering of stone buildings and statues.…

Dofasco Acid STSE 1. Summarize this article in your own words. Include all the main points. (4) On September 7, a burst pipe at ArcelorMittal Dofasco sprayed hydrochloric acid mist through the Crown Point neighbourhood, which runs south of the plant. The Hamilton’s public health department is gathering information on this incident and its impact on the neighbourhood from the Ministry of Environment and ArcelorMittal. Evidence of the leak was witnessed across Crown Point neighbourhood. Residents…

and nuclear waste immobilisation. This paper discusses the experimental study to optimize proportions of cement paste and mortar for compressive strength and workability using magnesium silicate hydrate system. Binary systems containing magnesium oxide and amorphous silica (silica fume) were studied in which amount of each constituent accounted for 40-60% by mass of the binder. It is found that magnesium silicate hydrate binder system requires very high water demand compared to Portland cement…

Liver failure, caused by things such as hepatitis and cirrhosis, leads to an array of symptoms including cardiorespiratory insufficiency (hepatopulmonary syndrome; HPS) and renal failure (hepatorenal syndrome; HRS). Disregarding the cause of liver failure itself, discuss the development of both of these symptoms. Hepatopulmonary Syndrome Figure 1: Blood Flow in Normal Conditions and Hepatopulmonary Syndrome (Grace & Angus, 2013). Figure 1 (above) shows the blood flow in a normal patient (top),…

Mineral Makeup for Women – What you should know Mineral makeup is the rage now. Due to the harmful effects of chemical based cosmetics on the skin, many women have switched over to use mineral makeup. As indicated by the name, mineral makeup products are made of mineral based ingredients, rather the natural minerals. Of course, you cannot get the natural minerals and apply it on the face. A lot of claims have been revolving around the cosmetic industry about the benefits as well as dangers of…

Ferroelectricity Among the ferroelectric materials, the static dielectric constant depends on the temperature under the relation: Curie – Weiss relation: €r = P + Q/ (T-Tc), (T> Tc), P, Q are constants temperature independent. C = Curie constant Tc = Curie temperature A transition in phase is observed at temperature Tc. Above this, the material remains in Paraelectric phase (the phase where the elementary dipoles of different crystal unit cells are…

Cu Again: Reactions of Copper Lynna Jezek*, Long Nguyen CHEM 111-502 Introduction: The element copper has proven to be of great use to human civilizations through time; from the first bronze smelted by the Sumerians to copper’s practicality in today’s industry-driven world, copper has become essential to human life. Copper’s use in industry (such as its great conductivity of heat and electricity) has driven many scientists to study the Copper Cycle, or how copper behaves as a response to…

Which comes in an odorless white solid form, that sinks in water. Beryllium oxide is one of the most expensive raw matter used in producing ceramics and is a crucial element within the nuclear industry. Beryllium Chloride Is a while/yellow solid, and reacts with water forming hydrochloric acid. Beryllium chloride is used as a…