Observations: Part I: Reaction between iron and oxygen Appearance of steel wool after 20 minutes From (relatively) shiny metal strips to notsoshiny strips that are stained with dark‚ reddishbrown stuff. Part II: Decomposition of hydrogen peroxide Appearance of potato and hydrogen peroxide combination: Lots of white‚ foamy bubbles around the potato slices. Day 2 Observations: Part III: Reaction between zinc and acetic acid Appearance of penny in vinegar after 30 minutes: Pretty dark coloured
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Ukraine is rich in natural resources: coal‚ iron ore‚ manganese‚ nickel and uranium‚ and others. The reserves of sulfur are the largest in the world‚ the reserves of mercury ore are the second largest. Also more than 5% of world reserves of iron ore are concentrated in Ukraine. There are oil and gas deposits but their reserves are not significant (the reserves of these fossil fuels were partly depleted during the Soviet period). Coal is the main fossil fuel of Ukraine. It is mined in the Donetsk
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Lab Report for Chemical Changes and Conservation of Mass Lab Previous to the reaction‚ the magnesium appeared to be a solid‚ white‚ black‚ and grey substance with many small dark particles within the substance. The hydrochloric acid was a clear liquid that looked like water It weighed 42.2 grams in total. During the reaction‚ the two substances produced bubbles‚ creating smoke and became warm with a smell that is irritating to the human nose. After the reaction‚ it appeared to be a clear‚ bubbly
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lean ore‚Disseminated to a large number of high phosphate‚ high iron ore and beneficial symbiotic metal in manganese ore‚ causing great difficulties to the beneficiation process.Manganese iron ore beneficiation methods to take ore washing and screening‚ magnetic separation‚ gravity separation and flotation‚ and fire for enrichment‚ chemical processing method and other methods to complete the beneficiation process. Manganese iron ore beneficiation methods and equipments 1.Washing and screening
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EM/JUNE14/MEC281 UNIVERSITI TEKNOLOGI MARA MEC281 MATERIAL SCIENCE Chapter 1: Structure TUTORIAL 1: Atomic Structure 1. Define : i. Atomic Mass ii. Atomic Number iii. Isotopes 2. Give the electron configurations for the following ions : i. Oxygen ii. P5+ iii. Ni2+ iv. Br- v. Cu PERIODIC TABLE MEC 281 EM/JUNE2014/MEC281 UNIVERSITI TEKNOLOGI MARA MEC281 MATERIAL SCIENCE Chapter 1: Structure TUTORIAL 2: INTERATOMIC BONDING‚ CRYSTAL STRUCTURES 1. Specify the type of atomic
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Vitamin A Overview Vitamin A is a vitamin. It can be found in many fruits‚ vegetables‚ eggs‚ whole milk‚ butter‚ fortified margarine‚ meat‚ and oily saltwater fish. It can also be made in a laboratory. Uses treatment and prevention of vitamin A deficiency. Vitamin A deficiency can occur in people with protein deficiency‚ diabetes‚ over-active thyroid‚ fever‚ liver disease‚ cystic fibrosis‚ or an inherited disorder called abetalipoproteinemia. Diseases i. Night Blindness: In the early stages
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Oxidation Lab Part 1: Purpose: You are going to investigate the ease with which different metals undergo oxidation and reduction. Materials: | 4 samples of each of: lead‚ zinc‚ iron‚ copper | spot plates steel wool/sand paper | | | | Solutions of: | copper(II) sulfate Ferric nitrate Silver nitrate Lead (II) nitrate | | Procedure: 1. Obtain 4 samples of each metal and clean with steel wool or sand paper. Wash your hands after cleaning the metals so you are not exposed to lead
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Iron Man: The Real Hero In today’s society‚ the concern of people and laws are not about doing good but rather having the appearance of good. People no longer care about what they need to stand for‚ only that they look like they aren’t sitting down. In fact‚ men today are treated as outcasts when sticking up for a good thing when it doesn’t have a pleasant appearance. Men such as Thomas Jefferson‚ Leonidas‚ Joshua and Jesus‚ men that represent something greater than what meets the eye‚ are scarce
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Determination of Manganese in Steel Submitted by: ------------------- Date of Submission: 27.03.11 Objectives: In steel production aside the iron‚ which is the primary source‚ some amounts of manganese is used together with carbon. The objective of this experiment is determining the manganese amount in the steel compound by using UNICAM UV-VIS Spectrometer. Theory: Many molecules absorb ultraviolet or visible light. The absorbance of a solution increases
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from. Bangladesh has a lot of floodplains and it is very hot. For my house roof the first layer on the frame would be 15mm of triplex nailed on to the frame of the house. The design will have corrugated galvanised iron on the frame. If the water went through the corrugated galvanised iron‚ it is able to slide the water down outside. There will be big pipes on the end bottom of the roof bringing the water beside the house and using it to take showers and etc. As the floor of the attic‚ I will put a
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