THE GRAVIMETRIC DETERMINATION OF SULFATE Learning Goals. 1. To determine the amount of Sulfate in an Unknown sulphate sample. 2. To perform and develop skills in precipitation Gravimetric method of quantitative analysis. DISCUSSION: Gravimetric analysis is one of the oldest analytical techniques and for this reason is referred to as a "classical method." Gravimetric procedures are usually very accurate‚ but more tedious than other methods. The only major equipment needed
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The Iron-Carbon Diagram There are two iron-carbon equilibrium diagrams: - stable iron-graphite Fe-Gr - metastable iron-cementite Fe-Fe3C The stable condition usually takes a very long time to develop. The metastable diagram is of more interest. Fe3C iron carbide called cementite because it is hard. Following phases exist on Fe-Fe3C diagram: - liquid solution of iron and carbon (L) - ferrite ( ) – an interstitial solid solution of carbon in Fe (bcc). At room temperature ferrite is ductile but
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Many people are affected by anemia. “Iron deficiency anemia is a common type of anemia‚ especially among women and people who have a diet low in iron” (ASH‚ n.d.). Iron supplement is the treatment for this anemia This paper discuses the case of Ms A. who has anemia. It discusses identification of anemia and rationale and patient diagnosis. Identification of Anemia and Rationale Ms A. a 26 year old white women has shortness of breath‚ low levels of energy‚ light- headed‚ elevated heart rate‚ elevated
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the Doce River rise in the southeast-east area (SE-E) of the Iron Quadrangle‚ located in south-central portion (C-S) of the state of Minas Gerais (Figure 1). The Iron Quadrangle is historically known as a rich auri-ferriferous province and is a classic region of the world Precambrian geology (Dorr‚ 1959). Its designation results from the area’s planimetric features‚ with a surface area of around 7‚000 km2‚ comprising the most important iron mines of Minas Gerais (Barbosa‚ 1968) and amongst the most
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Iron-Jawed Angels: Movie Analysis1 After watching “Iron Jawed Angels” I gained a strong sense of reality when witnessing what women had to do to achieve their independence and gain a place in a male dominated society. Up until the late 19th century‚ women were perceived as homemakers and were allowed only domestic duties in society but with the emerging industrial and political system women could now use their domestic skill to propel their voice in American government and society. “Dress up
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Measurement of Iron in Foods by Atomic Absorption Spectrometry Chem 462 Abstract The purpose of this experiment is to find the amount of Fe in dietary tablets by UV-visible spectrophotometer. A Perkin-Elmer Lambda 6 UV-Visible spectrophotometer will be used for the unknown sample and the iron(II) standards. Introduction Fe3+ in a dietary tablet is converted to Fe2+ and reacats with 1‚10-phenathronile to form the tris(1‚10-phenanthroline) iron (III) complex. Hydroquinone is used as the
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------------------------------------------------- Alloy Steel is a metal alloy whose major component is iron‚ with carbon content between 0.02% and 2.14% by mass. An alloy is a metallic solid solution composed of two or more elements. Complete solid solution alloys give single solid phase microstructure‚ while partial solutions give two or more phases that may or may not be homogeneous in distribution‚ depending on thermal (heat treatment) history. Alloys usually have different properties from those
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Chemistry Dr. Isotone Lab 1: Determination of the Empirical Formula of Silver Oxide Lab Objective: In this experiment‚ the percent composition and empirical formula of silver oxide will be determined. Silver oxide will be heated until it decomposes to silver metal and oxygen‚ and the percent calculation and empirical formula can be calculated based on combining the ratios of silver and oxygen in the reaction. Summary of Lab Procedure: 1. Set up Bunsen burner on a ring stand
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Grendel Chapter 1: Chapter one is mostly about Grendel’s problems: why is he the way he is? why he should kill in order to survive? and why everybody are so stupid for him? “And so begins the twelfth year of my idiotic war. The pain of it! The stupidity!”(p. 5) I wonder why did Grendel have a war with humans. He is very rageful and angry character but at the same time he is reasonable in his thoughts. He hates everything that surrounds him: “Him too I hate‚ the same as I hate these brainless
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Women were seen working in factories or as teachers but they had no say in the government. Thanks to a few women dedicated to making a difference‚ women have become more independent and now have a say in the government if they choose too. The movie Iron Jawed Angels depicts a group of women who wanted women to have a voice in politics. First thing they had to do was get women the right to vote. Alice Paul and Lucy Burns were the two leaders of the NWP (National Woman’s Party). The two women are
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