the experiment was conducted‚ data that was found‚ and the importance of testing the hardness of materials. This experiment explains and proves how the hardness of materials can be increased by alloying and heat treating. Intro – Rockwell Hardness Testing Soft and hard qualities exist in materials. In materials‚ hardness measures the ability of a material to resist scratching‚ indentation‚ or penetration. Hardness cannot be expressed in terms of defined units; it is the result of a defined measurement
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Permanent Water Hardness of Water Sources from PSHS-IRC by Indirect Titration Researchers Anna Marie S. Cabatbat Crystal Jill R. Mangsat Jan Michael Maturan Charlene Lou A. Nicer Arian Paul D. Norcio Submitted to the Faculty of the Philippine Science High School – Ilocos Region Campus in partial fulfillment of the requirements for Science and Technology Research 2 March 2013 ABSTRACT This study aimed to determine the permanent water hardness in terms of calcium carbonate
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COLLEGE OF TITLE: REMOVAL OF HARDNESS OF WATER USING PRECIPITATION AND COMPLEXATION METHODS. NAME: KWARTENG YAW PRINCE COURSE: BSC. ENVIRONMENTAL SCIENCE YEAR: FIRST YEAR EXPERIMENT NO. : A.1.1.3. T.A.: BRIGHT KOFI LEONARD DATE: 7TH NOVEMBER‚ 2007. Aims and Objectives: 1. To describe water hardness. 2. To soften hard water in terms of the species involved
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General Chemistry 1 Lab 4 Properties of Gases LabPaq - Properties of gases General Chemistry Introduction Background This report covers Properties of Gases and will allow me the opportunity to explore chemical and physical properties of gases. Collection and use of these gases will also be conducted in this lab. Statement of Problem Collecting gases is a difficult process. Singling out a gas and obtaining only that gas is the challenge we face in this experiment. Purpose
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Friction Peter Jeschofnig‚ Ph.D. Version 42-0262-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information
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Investigation Followup PROCEDURE The purpose of this experiment is to test different minerals to see where on the Mohs hardness scale they would fit. My question and problem‚ “What mineral is the hardest out of all?” My hypothesis is by looking at all mine minerals‚ amethyst is the hardest mineral‚ followed by opal‚ than apatite‚ then halite‚ than graphite and the muscovite will be the softest mineral. To begin this experiment‚ I purchased and gathered all my materials
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Mechanical Testing: Impact and Hardness Testing ME-3701-02 3rd March 2009 Ke Chen Abstract This experiment‚ as may be derived from the title‚ involves testing multiple metallic specimens to determine their toughness‚ strength and hardness. The three tests used to determine these characteristics are called the Charpy Impact test‚ tensile strength test and Rockwell Hardness test. As stated by www.key-to-steel.com {1}‚ “Charpy impact test method for metallic materials is specified by European
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chemical properties of pure chemical substances by subjecting them to various environmental extremes. Procedure: Filled each test tube with substances provided and subjected them to various conditions. These conditions included‚ heat‚ cold water‚ hot water‚ acid and basic additions and tested on litmus paper. The reactions were observed and documented at each step. Data tables: Substance name Color Odor Effect of heat Cold H2O Hot H2O Litmus Test Dilute HCl Dilute NaOH Mg Small silver
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Quantitative Determination of Total Hardness In Drinking Water By Complexometric EDTA Titration R. A. J. Cadiz1 and J. M. Nael2 1Institute of Biology‚ College of Science 2National Institute of Geological Sciences‚ College of Science University of the Philippines‚ Diliman‚ Quezon City‚ Philippines Date Submitted: May 9‚ 2013 Abstract This experiment is about the determination of water hardness through the use of complexometric EDTA titration. Determination of water hardness is important to find out the
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crystals‚ Wet: Salt mostly dissolves although layer of tiny granules is visible at bottom of water bubble. | c) Appearance of sand | Dry: multicolored‚ different shapes and sizes‚ generallty smaller than the salt crystals‚ very hard‚ not as sharp as salt crystals. Feels course. Some grains look more uniform to each other than others do.Wet: did not dissolve. Seemingly unchanged. | d) Oil and water on plastic | Oil: expands evenly into almost perfect circle‚ takes longer to reach max expansion
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