Sunny Patel Chem 101 10-13-09 Introduction The objective of this lab was to show how stoichiometry is applied to a specific chemical reaction. Stoichiometry is pretty much the math behind chemistry. Doing stoichiometry can calculate masses‚ moles‚ and percents with a chemical equation. The use of stoichiometry is how we were able to find the limiting reagent in this lab. A limiting reagent is the chemical that will be used up first. Many calculations had to be made throughout this lab
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(Caution: Avoid contact of both skin and clothing with hydrochloric acid.) Tap or stir to mix. This new product is copper(II) chloride solution‚ CuCl2(aq). Add the precut piece of aluminum wire to the test tube. (The wire should be bent like a fish hook to hook over the top of the test tube.) Place the test tube in a cold water bath. This reaction is very fast! (Instead‚ your teacher may tell you
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DATA AND OBSERVATIONS (14 points) INSERT A DIGITAL PHOTOGRAPH OF YOURSELF WITH THE 96-WELL PLATE PERFORMING ONE OF THESE TESTS. (3 points) Chemicals Tested – Record your observations in the table below. Be as detailed as possible. Na3PO4 NaI Na2SO4 NaCl NaHCO3 Na2CO3 NaOH Co(NO3)2 Cloudy Lavender NR NR NR Cloudy Light Pink Cloudy Light Pink Cloudy Blue Cu(NO3)2 Cloudy baby blue Cloudy Rusty Yellowish-orange NR NR Cloudy Pastel Blue Cloudy Pastel Blue
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increases our level of understanding about the complicated relationships in chemical reactions and in stoichiometry. II. Introduction- In chemical reactions and formulas there are various relationships between masses of reactants and products. The study of these relationships is called stoichiometry which is derived from the Greek words stoichein meaning “element” and metron meaning ”measure”. Stoichiometry is helpful in predicting outcomes of reactions or finding out missing parts in reactions. It can
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to describe the reactions and observations from the laboratory activity. Lesson 4.06: Stoichiometry Explain what the coefficients in a balanced equation represent and how they can be used in ratios. Use coefficients from a balanced equation as a mole ratio in dimensional analysis calculations. Solve a variety of stoichiometry calculations involving moles and mass. Use volume and density in stoichiometry calculations (honors). Lesson 4.07: Limiting Reactant Identify when a problem
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The litmus paper and the pH probe determined the salt solutions’ pH levels. When the blue litmus paper was dipped into ammonium chloride‚ the paper was changed to red whereas the red litmus paper stayed the same indicating that the solution was acidic. PH levels shown through pH probe also ranged between 5.5 to 6.0. Yet when in the presence of sodium acetate blue litmus stayed blue whereas red litmus turned blue‚ indicating its basicity. pH probe also showed the solution’s pH varied between the
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pdfMachine ii Is a pdf writer that produces quality PDF files with ease! Produce quality PDF files in seconds and preserve the integrity of your original documents. Compatible across nearly all Windows platforms‚ if you can print from a windows application you can use pdfMachine. Get yours now! TABLES OF CONTENT ACKNOWLEDGEMENT TABLE OF CONTENTS LIST OF TABLE LIST OF FIGURES ABSTRACT ABSTRAK CHAPTER 1 - INTRODUCTION 1.0 Introduction 1.2 Problem of statement 1.3 Scope of study 1.4 Objectives
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Note : all questions are compulsory . Section A Q.1 By what other name is the unit coulomb × volt ? 1 Q.2 What do the symbols { } { } mean in electric circuit? Q.3 Balance the reaction CuO + HCl → CuCl2 + H2O Q.4 Name the process in which plants release CO2 . Q.5 what is displacement reaction? Give an example of is displacement reactions? Q.6 Write the differences between Autotrophic and parasitic nutrition. Q.7 An electric bulb draws
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known starting mass of magnesium and the measured collection of hydrogen gas will be used to determine the reaction stoichiometry and the valency of magnesium. Introduction: In Chemistry‚ stoichiometry is the study of the quantitative relationship between amounts of reactants and products of a reaction (that is‚ how many moles of A react with a given number of moles B). Stoichiometry refers to the relative number of atoms of various elements found in chemical substances and is often useful in characterizing
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Chloride Sodium Chloride Strontium Chloride Procedure: 1. Put on safety goggles 2. Wear gloves when handling chemicals 3. Obtain a 250 – mL beaker half-full with water. Obtain 6 wooden splints 4. Obtain six weighing dishes labeled “CaCl2”‚ “CuCl2”‚ “LiCl”‚ “NaCl”‚ “KCl”‚ “SrCl2” – each containing a small scoopful of each metallic solid in the corresponding weighing dish 5. Put 10 drops of alcohol on the solid in the watch glass 6. Light a match – wooden splint – watch glass. Observe the
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