Rust is an iron oxide‚ usually red oxide formed by the redox reaction of iron and oxygen in the presence of water or air moisture. Several forms of rust are distinguishable both visually and by spectroscopy‚ and form under different circumstances.Rust consists of hydrated iron(III) oxides Fe2O3·nH2O and iron(III) oxide-hydroxide (FeO(OH)‚ Fe(OH)3). Given sufficient time‚ oxygen‚ and water‚ any iron mass will eventually convert entirely to rust and disintegrate. Surface rust is flaky and friable‚
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hammering 2 tubes in the ground‚ a slightly larger alluminum tube with a copper plumbing pipe inside‚ like this: _____ / _ \ | (_)-|----copper (+0.75 volts) \_____/----alluminum or zinc (-) It works just like a regular battery except the electrolyte is damp dirt. And you get a quick recharge with each and every acid-rain. The first dirt batteries I made indoors in paper cups worked almost as good as commercial AA’s‚ so I think the
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Introduction: The purpose of this experiment is to study a set of metals and their reactions reactions using different metals in an ordered activity series‚ the goal is to find the relative reactivity of them.Discovering why metals react with certain cations and solutions is the main point of this lab. This has many real life applications. When creating buildings‚ or bridges it is important to understand and counter-act the rusting of iron. You can do that by using the activity series. For any industry
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CHAPTER ONE INTRODUCTION A. STATEMENT OF THE PROBLEM This study aims to find out how long a lemon (Citrus limon) can last as a lemon battery powering a digital clock. B. HYPOTHESIS The researcher assumes that one lemon would last for a day or two and that the usage of more lemons would entail a longer battery time. C. OBJECTIVES Specifically‚ it aims to: 1) come up with a quantity-longevity ratio with the use of a varied quantity of lemons in the production of a lemon battery 2) find
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is compromised due to the zinc coating outgassing. Is there any truth to this? Is there anything I can do to prevent outgassing of the zinc coating? lightly-acidic solution will remove oxides from the surface as well as slightly etch the steel surface‚ providing a better surface profile for top coating to adhere to. Proprietary solutions are available that are designed to work effectively on galvanized or other zinc surfaces. ASK DR. GALV Yes‚ outgassing of the zinc coating can occur when applying
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THE MOLE CONCEPT References : Mohammed and Lambert ( Old Edition) Chapter 11 pg. 107 Mohammed and Lambert ( New edition) Chapter 8 pg 123 Anne Tindale Chapter 10 pg 46 The following topics will be covered : 1. Definition of Relative Atomic and Relative Molecular Masses. 2. Calculation of Relative Molecular Masses 3. Converting Moles to Grams / Grams to Moles 4. Calculation from equations Masses of substances /Volumes of gases / Concentration
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Telecommunication Wiring 5. Optical Cables Cable Tray Materials: • Most cable tray systems are fabricated from a corrosion-resistant metal (low-carbon steel‚ stainless steel or an aluminum alloy) or from a metal with a corrosion-resistant finish (zinc or epoxy). • The choice of material for any particular installation depends on the installation environment (corrosion and electrical considerations) and cost. Aluminum • Cable trays fabricated of extruded aluminum are often used for their high
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the ‘Voltaic Pile’. The “Pile” consisted of discs of copper and zinc‚ stacked alternatively. In 1800‚ after going through extensive experimentation‚ Volta developed the voltaic pile. The original voltaic pile consisted of a pile of zinc and silver discs. The discs were separated by pieces of paper or cardboard and they were in between the alternating discs. The dividers were soaked in salt water. A copper wire connected the bottom zinc disc to the top silver disc could create frequent sparks. The top
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Production and Properties of Metals Mr J E Chuter‚ Cert Ed 2012 En No 20100292 Introduction I have decided to produce a project based on the production and properties of metals‚ as although I have worked as a welder for over 30 years‚ and a welding teacher for the last 2 years on apart-time basis‚ I felt I didn’t know enough information on the material that I work on‚ on a daily
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Making an Activity Series of Metals using different Solutions Purpose/ Hypothesis: The purpose of this lab was to clearly identify the reactivity of magnesium‚ zinc and copper. The metals reactivity will be exemplified as it will be tested with different solutions such as zinc sulfate (ZnSO4)‚ copper sulfate (CuSO4)‚ hydrochloric acid (HCL)‚ magnesium sulfate (Mg2SO4)‚ iron (II) sulfate (FeSO4) and tin (II) chloride (SnCl2). This will allow us in creating an activity series to visually see the reactivity
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