by SSRT with a proper selection of testing variables. The metallurgical aspect of SCC behaviour of Al 2024-T351 was also discussed based on the microstructural and fractographic examinations. 1. Introduction High-strength 2xxx and 7xxx series aluminium alloys are susceptible to stress corrosion cracking (SCC) which may cause a
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of the total air pollution. It is produced by unburned fuel in the form of oxides of Nitrogen and hydrocarbons. One of the hydrocarbons produced is Carbon monoxide which is one of the most dangerous gases resulting in many health problems sometimes even death. Another cause of air pollution is Nitrogen oxides. Nitrogen oxide is one of the harmful gases‚ it is produced into the atmosphere by burning of fuel. Nitrogen oxide is very dangerous when combined with rain; it forms Nitrogen trioxide which
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of Magnesium Oxide that was formed during the experiment: Average mass of Mg+ Average Mass of O2 = Mass of Magnesium Oxide 0.11g + 0.05g = 0.16g The mass of Magnesium Oxide formed in this experiment is 0.16 grams. Bar graph: The Magnesium’s increase in mass after the experiment. The bar graph shows an increase of mass of the Magnesium after the experiment was finished and the reaction occurred. Finding Magnesium Oxide’s Empirical Formula: Compound: Magnesium Oxide = MgO2 Mg:
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Analysis of Aluminium in Potable waters by Atomic Absorption Spectrophotometric Techniques Objectives 1. To introduce the basic principles of Atomic Absorption analysis. 2. To Optimise the furnace temperature programme conditions for the analysis of Aluminium. 3. To determine the optimum conditions for the analysis of Aluminium by flame atomisation and to carry out the analysis using two seperate readouts on flame AAS instrument. Part A: Non-Flame Atomic Absorption – Electrothermal
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DETERGENT PESTICIDE DISINFFECTANT PRESERVATIVES ADDITIVES MEDICINES BLEACH PETROLEUM JELLY ALUMINUM FOIL CORN STARCH NAME.ROMELYN.VILLAMAYOR YR&SEC; IV-EDISON TEACHER; MRS. SALUDES NAME:ERICA E. VILLAMAYOR GR&SEC: VI-MALINIS TEACHER:MR:PENIDA A detergent is a surfactant or a mixture of surfactants with "cleaning properties in dilute solutions."[1] These substances are usually alkylbenzenesulfonates
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Magnesium Oxide: Lab Report The objective of the experiment is to determine the empirical formula of Magnesium Oxide through a procedure of heating magnesium ribbon to react with oxygen to form a magnesium oxide compound with the correct ratio of atoms within each element; 1:1. Equipment: REFER TO EXPERIMENT SHEET Method: REFER TO EXPERIMENT SHEET Results: Object | Mass (g) | Crucible + Lid | 38.23 | Crucible + Lid + Magnesium | 38.57 | Crucible + Lid+ Magnesium Oxide | 38.75 |
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| 0.16 | 0.08 | 0.24 | 0.19 | 0.11 | 0.30 | 0.21 | 0.11 | 0.32 | 0.23 | 0.09 | 0.32 | CONCLUSION: When a mass of magnesium is burnt in air‚ it combines with the oxygen molecules to form magnesium oxide. The graph doesn’t completely verify the empirical formula of magnesium oxide. There is a slight difference in the literature value of the empirical formula‚ MgO and the formula obtained from the graph. There are two points on the graph which do not fit into the trend line at all indicating
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The Magnesium Oxide Lab In a compound the atoms of different elements are present in numbers whose ratio is usually an integer or a simple fraction. The simplest (or empirical) formula of the compound expresses that ratio. Simplest formulas are determined by establishing the mass of each element present in a sample of the compound. From those masses one finds the number of moles of each element present. The mole ratio is also the atom ratio in the compound and that ratio provides the subscripts
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exists many problems of construction materials industry. Energy consumption of construction materials industry accounts for 7% of national total energy consumption and 10% of industrial energy consumption. Because of dust‚ sulfur dioxide and nitrogen oxide emissions‚ building materials industry is the key industry national emission regulation. Therefore‚ green development‚ recyclable development and low carbon development become the healthy development of building materials industry direction. The
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material/ in the manufacture of iron Powdered limestone + high temperature+ sand+ sodium carbonate= glass powdered limestone + powdered clay + heat= cement cement powder + water + sand +gravel= concrete Limestone + strong heating= quicklime (calcium oxide) + carbon dioxide (thermal decomposition) To make lots of quicklime we use a lime kiln 1) fill the kiln with crushed limestone 2) heat it strongly with a supply of hot air quicklime comes out of the bottom of the kiln‚ waste gases leave at the top
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