DEPARTMENT OF PURE AND APPLIED CHEMISTRY Visayas State University Visca‚ Baybay City‚ Leyte Name: Alecsa May S. Celaya BS-Chemistry 3 Date Submitted: December 19‚ 2014 Lab. Schedule: MW 2:00 – 5:00 pm Rating: Group No. 11 Experiment No. 5 Preparation of KAl(SO4)2•12H2O (Alum) OBJECTIVES This experiment aimed to: prepare KAl(SO4)2•12H2O‚ commonly referred to as alum‚ from aluminum metal from a canned soft drink‚ and determine the mass of the alum collected and its percent yield
Free Stoichiometry Chemical reaction Aluminium
that it actively reacts with many non-metals such as nitrogen‚ phosphorous‚ chlorine‚ sulfur‚ bromine‚ iodine and fluorine. Magnesium also readily reacts with some other compounds such as carbon monoxide‚ carbon dioxide‚ sulfur dioxide and nitric oxide. Magnesium has an appearance of a silvery and white shade. Among all the structural metals‚ magnesium is the lightest. The structural metals are generally used to build massive structures and buildings. Magnesium however is rarely used in the structures
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The Effect of Air Pollution on Human Health Yinghua Cui English 151B - 11 Instructor Terry Taskey May 2‚ 2012 The Effect of Air Pollution on Human Health With the booming of science and technology‚ pollution has aroused wide public concern. Industrial civilization creates tremendous fortune. At the same time‚ automobile exhaust ‚ the burning of waste‚ and a multitude of waste gas is discharged into the atmosphere. Humans live depend on air. Therefore‚ it is undeniable that
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significant figures. 7) Determine the empirical formula of the rodenticide warfarin (a carbon-hydrogen-oxygen compound)‚ which consists of 74.01% C and 20.76% O by mass. 8) Selenium forms two oxides. One has 28.8% O by mass and the other has 37.8% O. What are the formulas of these two oxides? 9) Adenine is a carbon-hydrogen-nitrogen compound with 44.45% C and 3.73% H by mass. It’s molecular mass is 135.14 u. What is its molecular formula? 10) Combustion of a 0.312 g sample of a
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precipitates to see if the solubility rules apply or if there were exceptions. Results: See table below Discussion: I formed an idea of different ionic reactions and how they can differ. Questions: B. Yes C. Carbonates‚ Phosphates‚ sulfides‚ oxides or hydroxides form precipitates. Alkali metal hydroxides are the exceptions. D. Most salts. E. Group one and two cations F. A1. Cobalt nitrate with Sodium phosphate. CO(NO3)2+6 H2O+Na3PO4+12 H2O Na3+PO2Co(NO3)2+18 H2OD5. Ba(N03)2 - NaHC03
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heating tasty beverages that deliver hot drinks right when you need it. Hot-Can is non-toxic and non-flammable‚ and 100% recyclable. 1.How does Hot-Can work? Hot-Can has developed a special double-chambered aluminium can which contains the beverage in the outer chamber and holds water and calcium oxide (quick lime) separately in the inner chamber. When the seal at the bottom of the can is depressed and broken‚ the water mixes with the quicklime‚ starting an exothermic reaction that heats the contents
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Galvanic Corrosion in the Statue of Liberty Introduction: The Statue of liberty built by Gustav Eiffel and Frederic Bartholdi in 1886 was made of materials that consisted of a wrought iron framework with an outer cladding of copper attached by saddles of copper. It was pretty much anticipated that galvanic corrosion would occur so both of the metals were separated by an insulation known as “asbestos and shellac” insulation (Shellac is a natural resin that was widely used in the Victorian
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Iron‚ which has the chemical symbol Fe‚ is an extremely useful metal and the most common element 0n the planet Earth. Here are some of the more common uses of iron in the world today. Uses of Iron * Iron catalysts are used in the Haber-Bosch Process to produce ammonia and the Fischer-Tropsch Process to convert carbon monoxide to hydrocarbons used for fuels and lubricants. * Iron metal is strong but is also quite cheap. Therefore‚ it is the most common metal in use today. Most automobiles
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The supplement that I chose was Nitric Oxide. This is a very up and coming supplement in the industry and although not many studies have been done on the long term effects many more gym goers are jumping on the band wagon and experiencing the benefits of it. Some history on Nitric Oxide is that it was first discovered in 1772 by Joseph Priestly‚ who called it "nitrous air‚" nitric oxide was first discovered as a colorless‚ toxic gas. Unfortunately‚ the classification of toxid gas and air pollutant
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to oxygen at room temperature. Vanadium also doesn’t react with hydrochloric or cold sulfuric acid. However‚ it is reactive with hot acids‚ like hot sulfuric acid and nitric acids. When vanadium reacts with heat and oxygen‚ vanadium oxide is produced. Vanadium oxide is used as a catalyst [2]. Vanadium resists corrosion‚ which acid causes. These acids include alkalis‚ sulfuric acid‚ hydrochloric acid‚ and salt water‚ It oxidizes at temperatures exceeding 660 degree and Its common oxidation states
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