Design lab for the rate of reaction between Mg and H2SO4 Introduction: Increasing the concentration (in moles) of H2SO4 will increase the rate of the reaction when a ribbon of Mg is added to the solution. The rate of the reaction all depends on how strong the concentration of the solution is. Research question: Does altering the concentration of H2SO4 increase the rate of reaction when a ribbon of Mg is mixed with the solution? Variables: Independent Variable: The concentration of
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This was a physical change because the water can be frozen again to turn back into ice‚ then melted and it will turn into water. The reactant of this lab was ice‚ the product was water. Once again it was a closed system lab because we didn’t want any mass that wasn’t from the ice to enter or escape the lab because it would throw-off the data. We conducted experiment 2.5 to see if the mass of copper and sulfur changed when it was heated. This lab was a chemical change because the copper and
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information. From all of us here at the Edexcel International team‚ we wish you every success.’ Patrick Casey Director of International‚ Edexcel Vocational-JUNE2012-FINAL-gk.ind2 2 14/6/12 03:16:23 Contents APPlIED SCIENCE ArT AND DESIgN BuSINESS AND SErvICES CONSTruCTION AND ThE BuIlT ENvIrONmENT ENgINEErINg hAIrDrESSINg & BEAuTy ThErAPy hEAlTh AND SOCIAl CArE hOSPITAlITy IT lAND-BASED AND ENvIrONmENT mEDIA PErFOrmINg ArTS & muSIC PuBlIC AND uNIFOrmED SErvICES SPOrT
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following Aβ-injection [19]. 2.5. Behavioral test: Morris water maze (MVM) 2.5.1. Apparatus The Morris water maze test was conducted as described [20‚ 21]. The maze consisted of a circular pool (200 cm in diameter) filled with water (23±2°C) to a depth of 40cm. The circular pool divided into four arbitrary quadrants. A transparent Plexiglas platform (the only escapable thing from the water) 10cm in diameter was submerged 2cm underneath the water surface at the midpoint of one quadrant. There were many
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Reaction Background: The reaction that you will be investigating is the reaction that occurs when an Alka-Seltzer tablet is placed into a given amount of water. Alka-Seltzer is an over-the-counter antacid and pain relief medication that is dissolved in water before it is ingested. Each tablet contains aspirin (acetylsalicylic acid)‚ citric acid‚ and sodium bicarbonate. As the tablet dissolves in water‚ the bicarbonate ions in the tablet react with the hydrogen ions from the acids that are also contained
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Date Submitted: June 16‚ 2013 Date Performed: June 13‚ 2010 Lab Section: Chem-181 DL Course Instructor: Purpose In this lab‚ I will be investigating some physical and chemical properties of gases and using these properties to identify these gases when they are encountered. * Procedure
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Purpose: The purpose of this lab was to determine the freezing point of pure water‚ the experimental van’t Hoff factor for a substance and the molar mass of an unknown solution. Reagents: 25mL deionized Water ¼ to ½ inches of rock salt 25mL Sodium Nitrate (NaNO3 ) 25mL unknown solution – handle unknown solution carefully Procedure: For part 1‚ the freezing point of deionized water was determined. An ice bath was prepared by filling a 600mL beaker ¾ full of ice and covered with ¼ to
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DSC 101 DESIGN AWARENESS Prof. Jacques Giard‚ PhD ©Jacques Giard 2010 DSC 101 Design Awareness 1 What are the goals for today? • Gaining a basic understanding of the designing process… • The Velcro story • Design-in-the-News… • What we already know… ©Jacques Giard 2010 DSC 101 Design Awareness 2 Design in the News McDonald’s plans to spend more than 600 million euros (US$828 million) to remodel 1‚280 of its European restaurants. NY Times Saturday August 25‚ 2007 "Re-imaging
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The different methods of measuring acids and bases in a solution By Starsky Intro to Biology September 26‚ 2011 Lab Partners: Kristen‚ Tania and Betty Introduction When using different methods to measure pH levels there are some tools that can be useful. Some more than others but by putting into action the different methods it may determine which tools will work best and give the best
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How much CO2? Introduction The goal of this lab was to determine the amount of grams of sodium bicarbonate (NaHCO3) required to produce enough CO2 gas to completely fill the lab and also how many Alka-Seltzer tablets that would equate to. This was done by collecting CO2 gas by inverting a buret and submerging it under water in order to calculate the volume of CO2 released from a fragment of Alka-Seltzer tablet. The main component of Alka-Seltzer is sodium bicarbonate‚ used to neutralize excess
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