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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placed lower in the electrochemical series is the cathode and acts as an electron acceptor. Presence of different variables: Independent variables: Different pair of metals as electrodes Pairs of metals Magnesium and Silver metal Iron and Silver metal Zinc and Silver metal Lead and Silver metal Copper and Silver metal Electrolyte used Magnesium Nitrate and Silver
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mass stays constant to know when all of the oxygen possible has been driven out. This process will occur through a series of heating and remassing. Silver oxide has many uses from batteries to military purposes. In a silver-zinc battery‚ silver oxide acts as the cathode and zinc as the anode. This battery is used in small electronic devices such as watches or calculators. The Apollo space program and United States military utilize the silver oxide batteries because they can contain a high current load
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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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N12/4/CHEMI/SPM/ENG/TZ0/XX 88126104 CHEMISTRY standard level Paper 1 Friday 9 November 2012 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question‚ choose the answer you consider to be the best and indicate your choice on the answer sheet provided. • The periodic table is provided for reference on page 2 of this examination paper. • The maximum mark for this examination
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observation Before * Blue solution of copper sulfate * Grey zinc powder During * Blue color solution changes to greyish black * Heat is given out‚ so the surroundings become hotter. After * Grey powder remains on the sides of the cup * Precipitate formed at the bottom of the cup List of chemicals and apparatus used Chemicals used Copper sulfate solution‚ 1 mol dm-3 25g of zinc powder Apparatus needed Pipette‚ 25ml Pipette filler Polystyrene cup
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