Purpose: To find out the percent yield of copper in the reaction between copper sulfate (CuSO4) and Iron (Fe). Materials: Balance 100-mL beaker 250-mL beaker Bunsen burner Copper sulfate crystals Glass stirring rod 100-mL graduated cylinder Iron filings Ring stand and ring Wire gauze Procedure: 1. Record mass of clean 100-mL beaker. 2. Add 8.0 grams of copper sulfate crystals to beaker. 3. Add 50.0 milliliters of distilled water to the crystals. 4. Put wire gauze on ring on ring
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Formal Lab Report #1 I. Basics Title of the Experiment: The Empirical Formula of an Oxide Authors: Section Number: Chemistry Location and Date II. Abstract The aim in this lab was to determine the empirical formula of an oxide of magnesium through combustion in air. This was achieved by heating an established mass of magnesium in air inside of a crucible‚ ultimately attaining a compound that contained Mg and O. The major result of the experiment was the empirical formula of the oxide of magnesium
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Table of Contents Introduction 2 Analytical Method (Heuristic usability) 2 Heuristic Usability Principals 3 How to conduct heuristic evaluation? 5 Advantages 5 Disadvantages 6 Empirical Method (Usability Testing) 7 What is Usability Testing? 7 How to conduct a usability testing? 7 Advantages of Usability Testing 8 Disadvantages of Usability Testing 9 Conclusion 10 Task 2 11 Introduction 11 Description of the problem 11 Description of the difficulties 11 Conclusion:
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plants. In photosynthesis‚ plants absorb carbon dioxide gas from the air‚ with energy from the sun‚ water from the soil and chlorophyll to make carbohydrates for food. Figure 13.1 – The Reaction of A wire of magnesium with Oxygen (page 342) of the textbook also shows how a wire of magnesium metal and oxygen in the
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When considering taking supplements‚ how often do we consider taking magnesium supplements? This mineral helps on the process of over 300 functions in our body‚ most important neurotransmitter and heart functions‚ and its consumption is essential for the regulation and development of these activities. The brain is one of the organs that benefit the most in taking magnesium supplements‚ magnesium activates ATP‚ a coenzyme that regulates your energy levels‚ making it a good complement to treat fatigue
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Determining g on an Incline Lab #1 Theory: During the early part of the seventeenth century‚ Galileo experimentally examined the concept of acceleration. One of his goals was to measure the acceleration due to gravity‚ or the acceleration of freely falling objects. Unfortunately‚ his timing devices were not precise enough to measure the free fall time directly. He decided to “dilute” gravity by using fluids‚ inclined planes‚ and pendulums. Galileo’s idea of diluting gravity using inclined planes
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Dolomite Calcination system for magnesium we are the leading company of magnesium production lines both at home and abroad‚in the year 2011‚we have signed an annual output of 100000 tons of magnesium metal project with the world iron and steel giant Korean Pohang iron POSCO company. Magnesium Calcination Process The company’s magnesium production line is very famous‚ at present‚many famous enterprises at home and abroad have chosen to cooperate with our company. step1: Calcined--The calcined
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Background Information: Spectrophotometry is a method that measures how much light is absorbed by using the electromagnetic spectrum. By seeing which colors are absorbed and which are reflected scientists can determine what a substance is without having to touch them. This is possible because each substance has a specific absorbance spectrum‚ meaning that the absorption spectrum of two different substances cannot be the same. Purpose/Hypothesis: 1. The purpose of the experiment was to determine
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ONE-SCHOOL.NET Physics Equation List :Form 4 Introduction to Physics Relative Deviation Relative Deviation = Mean Deviation ×100% Mean Value Prefixes Prefixes Tera Giga Mega Kilo deci centi milli micro nano pico Units for Area and Volume 1 m = 102 cm 1 m = 10 cm 2 4 2 Value 1 000 000 000 000 1 000 000 000 1 000 000 1 000 0.1 0.01 0.001 0.000 001 0.000 000 001 0.000 000 000 001 Standard form 1012 109 106 103 10-1 10-2 10-3 10-6 10-9 10-12 Symbol T G M k d c m μ n p (100 cm) (10
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• Profitability Procter & Gamble’s Gross Profit Margin (GPM) increased in 2010 by 2.41%‚ however it decreased in 2011 by 1.34%‚ while Net Sales continued to increase from 2009 to 2011. This trend was due to a price fluctuation in Cost of Goods Sold. The GPM directly affected the Operating Profit Margin (OPM)‚ which also increased in 2010 by 0.25% and decreased in 2011 by 1.14%. The Operating expenses were somewhat stable‚ which resulted in the OPM ratios following a similar trend as the GPM
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