Stoichiometry Essays & Research Papers

Best Stoichiometry Essays

  • Stoichiometry - 1576 Words
    AP Chemistry Unit 2 Notes Stoichiometry  You should understand all that is presented in chapter 3 of your text (Zumdahl: Chemistry, 8th edition). Some of the highlights are presented below.  Atomic Masses (Section 3.1)       Nearly every element is made up of atoms of more than one isotope for that element. A few, like Be, only have one isotope. Others can have a large number of isotopes. Tin (Sn) has ten isotopes. (No pun intended.) Isotopic abundance is determined by the use of...
    1,576 Words | 6 Pages
  • Stoichiometry - 949 Words
    Baking soda & vinegar: The reaction By Gregory Johnson Lab Partners: Angel Medina Ian Bailon Erika Alvarado Instructor: Caroline Chen April 1st, 2011 Introduction In chemistry class, we conducted an experiment involving baking soda and vinegar. We mixed them together and we ended up with a carbon dioxide, water, and sodium acetate. We did this to learn more about stoichiometry and how easily a mistake can be made when doing an...
    949 Words | 4 Pages
  • Stoichiometry Quiz - 1690 Words
    Chemistry 1: PROBLEM SET SY 2012/2013 CLASS #: _______________ NAME_________________________________________ SECTION: ______________________ Stoichiometry II - Mole Calculations/ Limiting and Excess Reagent – Lecture Notes 1. Given the balanced equation N2(g) + 3H2(g)  2NH3(g) How many moles of ammonia are produced when 0.60 mol of nitrogen reacts with hydrogen? 2. Given the equation: SiO2 + HF  SiF4 + H2O a. Calculate the number of moles HF that would completely react with 2.5 moles of...
    1,690 Words | 7 Pages
  • Stoichiometry Lab - 1143 Words
    Stoichiometry lab By: James Stewart Purpose: To calculate mole ratios Introduction: There are two types of chemical analysis; qualitative analysis which is the identification of a substance present in a material, and qualitative analysis which measures the amount of the substance. In this lab, you will perform a quantitative analysis of a two-step reaction. Copper(II) oxide will be synthesized from a known mass of copper(II) sulfate pentahydrate. Using the relationship of the balanced...
    1,143 Words | 5 Pages
  • All Stoichiometry Essays

  • Lab Stoichiometry - 671 Words
    John Smith 3/4/13 B-3 Stoichiometry Relationships in Reactions Lab Purpose: To compare the experimental mass of a product of a chemical reaction with the mass predicted for that product by calculation. Materials: * Balance * Evaporating Dish * Pipette * Iron Ring * Scoopula * Goggles * Apron * Burner * Ring Stand * Watch glass * Wire Gauze * Test Tube * NaHCO * 6M HCl Important Info: The reaction you will be working with...
    671 Words | 3 Pages
  • Stoichiometry-problems - 1583 Words
    moles-stoichiometry-practice-problems Now you're ready to use what you know about conversion factors to solve some stoichiometric problems in chemistry. Almost all stoichiometric problems can be solved in just four simple steps: 1.Balance the equation. 2.Convert units of a given substance to moles. 3.Using the mole ratio, calculate the moles of substance yielded by the reaction. 4.Convert moles of wanted substance to desired units. These "simple" steps probably look complicated at...
    1,583 Words | 7 Pages
  • Stoichiometry Lab - 317 Words
    Stoichiometry Lab Name Questions A. From your balanced equation, what is the theoretical yield of your product? Theoretical yield of the CaCO3 is expected to be .69g. B. According to your data table, what is the actual yield of the product? The mass of the filter paper was 1.1g, and the total mass of the filter paper when dried with the CaCO3 was 1.8 total. Thus the actual yield of the product was .70g. C. What is the percent yield? Percentage yield is actual yield over the...
    317 Words | 2 Pages
  • Stoichiometry Lab - 551 Words
    PR OCEDURE Before beginning, set up a data table similar to the Data Table: Experiment Results in the Lab Report Assistant section. This experiment will create a reaction of sodium carbonate and calcium chloride dihydrate to produce a precipitate of calcium carbonate. This formula is: Na2CO3(aq) + CaCl2. 2H2O(aq) à CaCO3(s) + 2NaCl(aq) + 2H2O 1. Put on your goggles. 2. Weigh out 1.0 g of CaCl2·2H2O and put it into the 100-mL beaker. Add 25 mL of distilled water and stir to form the...
    551 Words | 2 Pages
  • Stoichiometry of a Precipitation Reaction - 1228 Words
    Experiment 3: Stoichiometry of a Precipitation Reaction Abstract: In this experiment the objectives were to try and predict the amount of product that was produced in the precipitation reaction of calcium carbonate by using stoichiometry. Then learn how to figure out the actual yield, theoretical yield and percent yield of the experiment. Experiment and Observation: The first step in the experiment was to weigh 1g of CaCl2 +2 H2O, then pour it into the...
    1,228 Words | 4 Pages
  • Stoichiometry Design Experiment - 291 Words
    Chemistry Lab Report Stoichiometry Design Experiment Percentage Yield of Calcium Carbonate and HCl I. Background Information When marble chips and hydrochloric acid are added together, they form sodium chloride, water, and carbon dioxide. This reaction can be displayed by the balanced equation below; CaCO3 (s) + HCl (l) NaCl(s) + H2O(l) + CO2 (g) As the carbon dioxide is formed, it will leave the open beaker as a gas. This will result in a loss of mass. The mass change can then be...
    291 Words | 2 Pages
  • Stoichiometry of a Precipitation Reaction - 567 Words
    || || Data Tables: Step 3: Show the calculation of the needed amount of Na2CO3 Convert 1.0g of CaCl2-.2H2O to moles of CaCl2-.2H2O 1.0g x 1 mole CaCl2-.2H2O 147.0 g CaCl2-.2H2O = 0.00680 moles CaCl2-.2H2O The mole ratio is 1:1 Hence if we have 0.00680 moles of CaCl2-.2H2O we will as well need 0.00680 moles of Na-2CO3 Convert moles of Na-2CO3 to grams of Na2CO3 = 0.00680 moles Na-2CO3 x 105.99g Na-2CO3 1...
    567 Words | 3 Pages
  • Stoichiometry of a Precipitation Reaction| - 578 Words
    .6Name: Danielle Hall|Date: 10.15.2012| Exp 9: Stoichiometry of a Precipitation Reaction|Lab Section: | Data Tables: Step 3: Show the calculation of the needed amount of Na2CO3 CaCl2.H2O(aq)= m/M =1/147 =0.0068 mol CaCO3(s)=0.0068*1/1 =0.0068 mol CaCO3(s)= CaCO3 (s)= CaCO3 mol *CaCO3 g =0.0068 mol*100.01 g =.68 g Step 4: Mass of weighing dish _0.6___g Mass of weighing dish and Na2CO3 __0.72__g Net mass of the Na2CO3 ___0.12_g Step 6: Mass of filter...
    578 Words | 3 Pages
  • Stoichiometry of a Precipitation Reaction - 555 Words
    Stoichiometry of a Precipitation Reaction Purpose: The purpose of this lab is to calculate the theoretical, actual, and percent yield of the product from a precipitation reaction. Also, to learn concepts of solubility and the formation of a precipitate. Procedure: Weigh out your 1.0g of CaCl2-2H20 and put it into the 100mL beaker, Add your 25mL of distilled water and stir to form the calcium chloride solution. Next, use stoichiometry to determine how much Na2CO3 and put it into a small...
    555 Words | 2 Pages
  • Chapter 3 Stoichiometry - 2090 Words
    Chapter 4 — Intro—1 1 CHAPTER 3 Topic Scopes: Stoichiometry and Solution Concentration • Molarity, molality, parts per million & percentage (w/w, w/v and v/v) • Stoichiometry calculation • Limiting reactant • Theoretical yield, actual yield and percentage yield 1 2 Mole Concept No. of Moles = Molarity (M) • Molarity (molar concentration) is the number of moles of a solute that is contained in 1 liter of solution Mass (g) molar mass (g/mol) No. of Moles = Molarity (mol/L)  volume (L)...
    2,090 Words | 23 Pages
  • Stoichiometry and Limiting Reagent - 1141 Words
    Stoichiometry and Limiting Reagents Theodore A. Bieniosek I. Purpose and Theory The purpose of the experiment is to study and apply the processes of stoichiometric calculation on a controlled chemical reaction. We will be adding variable amounts of reactants in a chemical reaction in order to demonstrate the effect of limiting reagents. Based on the volumes of the reactants, and their respective molarities, we can calculate the theoretical yield of the reaction and compare it to...
    1,141 Words | 5 Pages
  • Stoichiometry Study Guide - 262 Words
    Honors Chemistry Name: _____________________ Study Guide – Unit 8: Stoichiometry Vocabulary – Give definitions and examples where applicable 1. Product 2. Reactant / Reagent 3. Theoretical Yield 4. Actual Yield 5. Percent Yield 6. Excess Reagent 7. Limiting Reagent 8. Law of Conservation of Matter Short Answer – explain the following: 9. What is conserved in every balanced equation (multiple answers)? 10. What determines the mole ratio in a balanced equation? 11. What is the proper...
    262 Words | 2 Pages
  • Lab 3 Stoichiometry Precipitation
    The calculations completed for this experiment include determining the amount of Na2CO3 needed to do a full reaction. This was calculated through stoichiometry calculations: Molar mass was first calculated for CaCl2*2H2O Ca = 40.078g Cl2 = 35.453g*2 = 70.906g 2H2 = 1.00794g*4 = 4.03176g 2O = 15.9994g*2 = 31.9988g 40.078g + 70.906g + 4.03176g + 31.9988g = 147.01456g or 147.0 g CaCl2 1g CaCl2 * 2H2O x (1 mol CaCl2 *2H2O/147g CaCl2 *2H2O) = 0.0068 mol of CaCl2*2H2O Molar mass...
    877 Words | 4 Pages
  • Stoichiometry of Precipitation Reaction - 1012 Words
    Stoichiometry of a Precipitation Reaction March 20,2013 Amber McCollum Introduction Stoichiometry is a branch of chemistry that deals with the quantitative relationships that exist among the reactants and products in chemical reactions To predict the amount of product produced in a precipitation reaction using stoichiometry, accurately measure the reactants and products of the reaction, determine the actual yield vs. the theoretical yield and to calculate the percent yield. The...
    1,012 Words | 4 Pages
  • Stoichiometry of a Precipitation Reaction - 1470 Words
    Experiment 3: Stoichiometry of a Precipitation Reaction Abstract: In this experiment, the objective is to use Stoichiometry to predict the amount of product produced in a precipitation reaction. We received working knowledge of how to accurately measure reactants and products of the reaction. We then are able to use the data that we recorded to make assessments of the actual yield opposed to the theoretical yield. When we calculated the percent yield we are...
    1,470 Words | 5 Pages
  • Stoichiometry Questions and Answers - 779 Words
     Modbury High School SACE Stage 1 Chemistry Topic 5 Mole Concept and Stoichiometry Assignment 5: Volumetric analysis (titrations), stoichiometry SOLUTIONS Note: Write answers neatly and legibly in your exercise book or on pad paper. ALWAYS include a title and name for your work and clearly indicate each answer. 1. a) 23.08 and 23.00 mL are concordant titre values. Average titre = (23.08 + 23.00) = 23.04 mL 2 b)...
    779 Words | 6 Pages
  • Stoichiometry of a Precipitation Reaction - 435 Words
    Name: Brian James|Date:3/10/13| Exp 9: Stoichiometry of a Precipitation Reaction|Lab Section: 73426| Data Tables: Step 3: Show the calculation of the needed amount of Na2CO3 CaCl2.H2O(aq)= m/M =1/147 =0.0068 mol CaCO3(s)=0.0068*1/1 =0.0068 mol CaCO3(s)= CaCO3 (s)= CaCO3 mol *CaCO3 g =0.0068 mol*100.01 g =.68 g Step 4: Mass of weighing dish _0.6_g Mass of weighing dish and Na2CO3 .72_g Net mass of the Na2CO3 .12_g Step 6: Mass of filter...
    435 Words | 2 Pages
  • Stoichiometry Lab Report - 715 Words
    Stoichiometry I. Introduction/ Purpose: Stoichiometry is the study of the quantitative, or measurable, relationships that exist in chemical formulas and also chemical reactions. The calculations of a stoichiometry problem depend upon balanced chemical equations. The coefficients of the balanced equations indicate the molar ratio of the reactants and products taking part in the reaction. There are three major categories of stoichiometry problems such as mass-mass, mass-volume, and...
    715 Words | 3 Pages
  • Basic Stoichiometry Phet Lab
    Basic Stoichiometry PhET Lab rvsd 2/2011 Let's make some sandviches! _ Introduction: When we bake/cook something, we use a specific amount of each ingredient. Imagine if you made a batch of cookies and used way too many eggs, or not enough sugar. YUCK! In chemistry, reactions proceed with very specific recipes. The study of these recipes is stoichiometry. When the reactants are present in the correct amounts, the reaction will produce products. What happens if there are more or less of...
    1,190 Words | 8 Pages
  • My Experiment in Stoichiometry - 1315 Words
    Name: Angelica G. Morales Course: BSENVISCI- II Date performed: February 20, 2013 Date submitted: February 27, 2013 EXPERIMENT NO. 5 STOICHIOMETRY Stoichiometry From Wikipedia, the free encyclopedia Jump to: navigation, search Stoichiometry (pron.: /ˌstɔɪkiˈɒmɨtri/) is a branch of chemistry that deals with the relative quantities of reactants and products in chemical reactions. In a balanced chemical reaction, the relations among quantities of reactants and products typically form a...
    1,315 Words | 4 Pages
  • Stoichiometry and Limiting Reagents - 299 Words
    After concluding the experiment, I learned that the products reaction can be created in precise amounts when the masses of the products can be measured to exact standards. Further, I learned more about the molarity of aqueous solutions, and how that quantity, along with the volume of the solution, can be manipulated to find the exact number of moles in a given volume. In this case, experimenters were given aqueous solutions of NaOH and CaCl2 in known molarities and then had them react with one...
    299 Words | 1 Page
  • Stoichiometry of a Precipitation Reaction - 432 Words
    Title: Stoichiometry of a Precipitation Reaction Purpose: The purpose is to predict the amount of precipitation using stoichiometry. Another purpose is to measure and calculate percentage yield. Procedure: 1. Weigh out 1.0g of CaCl2*2H2O and put it into a 100mL beaker. 2. Add 25mL of distilled water and stir. 3. Using stoichiometry to determine how much Na2CO3 is needed for a full reaction. 4. Weigh the calculated amount and put it in a small paper cup. Add 25mL distilled water and...
    432 Words | 2 Pages
  • Stoichiometry of a Precipitation Reaction - 347 Words
    LAB REPORT 7 – STOICHIOMETRY OF A PRECIPITATION REACTION No credit will be given for this lab report if the Data section is not completely filled out. NOTE: This experiment may take several days to complete. OBJECTIVE 1. Predict the amount of product produced in a precipitation reaction using stoichiometry 2. Accurately measure the reactants and products of the reaction 3. Determine the actual and theoretical yield 4. Calculate percent yield PROCEDURE Please...
    347 Words | 2 Pages
  • Stoichiometry of a Precipitation Reaction - 1593 Words
    Experiment 3: Stoichiometry of a Precipitation Reaction Name: Alexandria Gfeller Lab Partners: None Date of Experiment: June 29th 2014 Location: My House Course Number: CHE112 Abstract: In this experiment Stoichiometry of a Precipitation Reaction, the main objectives were to use stoichiometry to calculate the theoretical yield of CaCO3 that precipitates from the reaction between Calcium chloride, Dihydrate and Sodium carbonate, and then...
    1,593 Words | 5 Pages
  • Chemistry Stoichiometry Lab Essay Example
    Teresa Meng, Niharika Palakodety, Victoria Wang, and Grace Xiong Mrs. Rhonda Smith Honors Chemistry Period 4 13 May 2012 Redox Reactions Lab Report We wished to investigate the oxidation number of a metal that would form aqueous ions when reacted with an aqueous nitrate salt. For this purpose, we chose to investigate the reaction of solid copper metal, in the form of a wire, with aqueous silver nitrate. Before we began the lab, we hypothesized that when silver nitrate, AgNO3, reacts...
    1,162 Words | 4 Pages
  • Stoichiometry Lab: Data Collection and Processing
    IB CHEMISTRY Stoichiometry Lab Data Collection and Processing Item | Mass | Small beaker (100 mL) | 47.0 grams | Large beaker (150 mL) | 82.4 grams | Mass of filter paper | 0.50 grams | Mass of coffee filter | 1.00 gram | 150mL beaker + 20mL water + lead nitrate solution | 96.1 grams | 100mL beaker + 20mL water + sodium carbonate solution | 64.2 grams | Watch glass | 32.2 grams | Precipitate + filter paper + coffee filter | 2.20 grams | Precipitate + 150mL + coffee...
    1,015 Words | 4 Pages
  • Study Guide Stoichiometry Student Editable
    Stoichiometry Section 11.1 What is stoichiometry? In your textbook, read about stoichiometry and the balanced equation. For each statement below, write true or false. _______true___________ 1. The study of the quantitative relationships between the amounts of reactants used and the amounts of products formed by a chemical reaction is called stoichiometry. ________true__________ 2. Stoichiometry is based on the law of conservation of mass. _________false_________ 3. In any chemical reaction,...
    1,503 Words | 8 Pages
  • Experiment 6 Stoichiometry Of A Precipitation Reaction
     Purpose: In this experiment I will predict the amount of product produced in a precipitation reaction using stoichiometry by accurately measuring the reactants and products of the reaction. I will also determine the actual yield vs. the theoretical yield by calculating the percent yield. Materials: 1 Distilled water 1 Paper towels 1 Small paper cup 1 Coffee cup or mug 1 Beaker, 100 mL, glass 1 Funnel 1 Cylinder, 25 mL 1 Goggles-Safety 1 Scale-Digital-500g 1 Weighing boat, Plastic 1 CaCl2·2...
    810 Words | 4 Pages
  • Exp 10 Stoichiometry Lab Reportnew
    Lab Report for Experiment #10 Stoichiometry of a Precipitation Reaction Student's Name ____________________ Date of Experiment ___________ Date Report Submitted _________________ Title: Purpose: Instructor Changes: Weigh out about 1.7 g of CaCl2·2H2O and record your mass to +/- 0.1 g (for example 1.6 g, 1.7 g, or 1.8 g). We have made this change so that you will have 2 sig figs in subsequent calculations. Have you made any changes to the procedure? Please explain: Data Tables and...
    505 Words | 3 Pages
  • Copper Iron Stoichiometry Lab Report
    Copper-Iron Stoichiometry Lab Report 10/3/12 Abstract: The lab performed required the use of quantitative and analytical analysis along with limiting reagent analysis. The reaction of Copper (II) Sulfate, CuSO4, mass of 7.0015g with 2.0095g Fe or iron powder produced a solid precipitate of copper while the solution remained the blue color. Through this the appropriate reaction had to be determined out of the two possibilities. Through the use of a vacuum filtration system the mass of Cu...
    1,807 Words | 6 Pages
  • Lab Experiment Stoichiometry of a Precipitation Reaction
    Ocean County College Department of Chemistry Stoichiometry of a Precipitation Reaction Submitted by Hendy Zelishovsky Date Submitted: 4/26/2012 Date Performed: 4/25/2012 Lab Section: Chem-180-DL1 Course Instructor: Dr. Cynthia Spencer Purpose...
    553 Words | 3 Pages
  • Chemistry 1 Stoichiometry Lab Essay Example
    Stoichiometry 04/09/12 Chemistry I B Ms. Norton Introduction/Pre-laboratory Assignment: 1. Write out and balance each of the following equations. A. CuSO4 + Fe Cu + FeSO4 B. 3CuSO4 + 2Fe 3Cu + Fe(SO4)3 2. If Iron (III) Sulfate were formed, what mass of Copper would be expected and what is the limiting reagent? C. 2.26 g Cu D. Fe 3. If Iron (II) Sulfate were formed, what mass of Copper would be expected and what is the limiting reagent?...
    721 Words | 3 Pages
  • chem 11b - 1559 Words
    Stoichiometry: Synthesis of Garden Lime Standard: The student will explore the mathematics of chemical formulas and equations. Have you ever wondered why hot dogs are sold in packages of 10, but hotdog buns are sold in packages of 8? This is an example of a ratio. Stoichiometry is the scientific word for ratios of moles. It is the study of the quantitative relationships between reactants and products in a chemical reaction. These relationships are often referred to as mole-to-mole...
    1,559 Words | 6 Pages
  • Grignard Synthesis of Triphenylmethanol from Benzophenone
    Grignard Synthesis of Triphenylmethanol from Benzophenone Purpose: The purpose of this experiment was to synthesize the tertiary alcohol triphenylmethanol from a Grignard reagent, phenyl magnesium bromide. The Grignard reagent was synthesized from bromobenzene and magnesium and then reacted with benzophenone to produce triphenylmethanol. It was important that water be excluded from the reaction, in order to prevent the formation of benzene. The reaction of phenyl magnesium bromide and...
    1,972 Words | 8 Pages
  • Labpaq Lab 3 Extra Questions Essay Example
    Lab 3: Stoichiometry of a Precipitation Reaction NOTE: All photos should be taken so the reading on the electronic balance is readable. Photo 1: filter paper being weighed on electronic balance, along with your student information card. Photo 2: beaker with precipitate slurry in it (after step 5) , along with your student information card Photo 3: dried precipitate/filter paper being weighed on electronic balance, along with your student information card Additional Question...
    360 Words | 1 Page
  • chem lec - 250 Words
    Problem Set Introduction to Stoichiometry Name: ______________________________________________________ Course/Yr/Section: ____________ Date:_____________ Direction: Analyze and solve each problem carefully, write the solution on the space provided. Box your final answer/s. (10pts each) Determine the molar mass of the following: a. Al(NO3)3 b. ZnSO4 c. Ba(C2H3O2)2 d. NaHCO3 CH3COOH Calculate the percentage oxygen in the following compounds: a. Na2CO3 b. BaSO4 c....
    250 Words | 0 Page
  • Preparation of an Ionic Compound from Aluminum Metal
    Preparation of an Ionic Compound from Aluminum Metal October 6, 2010 The purpose of this laboratory project was threefold, in that it presented three main objectives. The first objective was to prepare the ionic compound alum from aluminum powder. The alum was produced from the reduction-oxidation reaction of aluminum with potassium hydroxide and sulfuric acid in water. The second objective was to then analyze the alum product for water crystallization; that is, to determine the value of x...
    1,260 Words | 4 Pages
  • Mass and Chemical Reactions Lab
    Mass Relationships in a Chemical Reaction Lab Introduction: This lab focused on mass relationships within a chemical reaction. To understand this lab first, it is necessary to understand the reaction that is going on in the reaction. The Copper (II) chloride hydrate reacts with Aluminum to produce Aluminum chloride, copper, and water. Theoretical yield and various other forms of yield must be understood too, theoretical yield is what amount of the product you should get theoretically according...
    745 Words | 3 Pages
  • Friedel – Crafts Acylation: Synthesis of 4-Methoxyacetophenone
    Introduction Friedel-Crafts acylation of anisole with acetic anhydride was used in this experiement to synthesize 4-methoxyacetophenone with the use of a reflux apparatus. Friedel-Crafts reactions can be done by alkylation, which involves mixing an alkyl or acyl halide with a Lewis acid, or acylation, which is done with acid chlorides or anhydrides(Lefevre). Acylation was used because it does not have as many disadvantages aklyations reactions have such as polyalkylation, second electrophilic...
    837 Words | 3 Pages
  • Lab 3 Requirements - 280 Words
    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 in an editable file which can be sent to an instructor. Observations When using 1.0 g of CaCl2·2H2O, stoichiometric calculations should give the following results:...
    280 Words | 1 Page
  • 4.08 Percent Yield - 231 Words
    Create a data table to record your data from the procedure. Be sure that the data table is neat and organized and that all measurements have the correct significant figures and units. (3 points) Events Masses Empty Dish 24.35 g Dish with NaHCO3 37.06 g Dish with NaHCO3 and HCI 40.06 g Dish after burning 31.52 g Write the complete balanced equation for the reaction that occurred in this lab. Hint: H2CO3 is not ...
    231 Words | 2 Pages
  • Chemistry 30s Exam Grade 11
    GRADE 11 CHEMISTRY (30S) Final Practice Examination Answer Key GRADE 11 CHEMISTRY (30S) Final Practice Examination Answer Key IInstructions The final examination will be weighted as follows Modules 1–3 Modules 4–6 The format of the examination will be as follows: Part A: Fill-in-the-Blanks Part B: Multiple Choice Part C: Short Answer Total Marks Include units with all answers as required. Useful Information You will need the following in order to complete this examination: n n n n...
    5,178 Words | 25 Pages
  • Study guide for Exam 3 Chem 1212 Fall 2
    Study guide for exam 3 Chem 1212 Fall 2014 (chapters 3,4, 14,15) Chapter 3 Nomenclature ionic compounds, molecular compounds, simple organic compounds, hydrates, acids Know the names and charges of the polyatomic ions Calculation molecular weight mw Molar mass of compound Number particles = NA x n Mass % Determination of empirical formula and molecular formula Combustion analysis Balancing equations Chapter 4 Limiting reactant Mole to mole conversion from reaction stoichiometry Theoretical...
    381 Words | 2 Pages
  • Multistep Synthesis - 669 Words
    Results: Limiting Reactant: Eq 1 Limiting reactant = Benzoin Theoretical yield of Benzil: Eq 2 Theoretical Yield Benzil | 0.296 g | Mass of Crude Benzil | 0.188 g | Mass of Final Benzil | 0.127 g | % Yield | 43% | % Recovery | 66% | Table 1: Mass of crude/final Benzil, % yield, and % recovery Percent Yield: % Yield = (Final product/Theoretical product) x 100 Eq 3 = (0.127 g/0.296 g) x 100 = 43% yield Percent Recovery...
    669 Words | 3 Pages
  • Question Set on Chemical Equations
    1. Create a data table to record your data from the procedure. Be sure that the data table is neat and organized and that all measurements have the correct significant figures and units. (3 points) Mass (grams) Empty Petri Dish 24.35 g Petri Dish with NaHCO3 added 37.06 g Petri Dish after Reaction is Completed 40.06 g Petri Dish After H2O is Evaporated 31.52 g 2. Write the complete balanced equation for the reaction that occurred in this lab. Hint: H2CO3 is not a final product of the...
    351 Words | 2 Pages
  • Analysing the Data Created By Copper Displacing Silver in a Silver Nitrate Solution
    ANALYSING THE DATA CREATED BY COPPER DISPLACING SILVER IN A SILVER NITRATE SOLUTION PURPOSE This lab was done to achieve many things, such as creating the properly balanced chemical equation using mol ratios and to confirm and apply the principles of stoichiometry in a real situation with collected data. MATERIALS Copper wire Scale Clean dry beaker 0.75g (approx.) silver nitrate 100mL (approx.) water Glass rod (stirring) Filter paper Distilled water Incubator Note: The watch...
    1,011 Words | 6 Pages
  • Mass Relationships in a Chemical Reaction
    Mass Relationships in a Chemical Reaction – Lab Christian Lecce Mr. Ribarich Wednesday, February 20st, 2013 Purpose To determine the mass of copper formed when excess aluminum is reacted with a given mass of a copper salt (Copper Chloride dihydrate), and the mole-to-mole ratio between the reactant and the product of a chemical reaction. Apparatus * 150ml beaker * Stirring rod * Ruler * Hotplate * Tweezers * 50ml graduated cylinder Materials *...
    720 Words | 5 Pages
  • Student - 767 Words
    Lead (II) Iodide Synthesis and Percent Yield NAME:__________________________________________________ PERIOD:______ Prelab 20.0 mL of 0.150 M potassium iodide and 10.0 mL of 0.200 M lead (II) nitrate are mixed together. 1. Write the net ionic equation describing the reaction. 2. Calculate the theoretical yield. Show calculations. 3. a) If a student obtains 0.890 g of lead(II) iodide, calculate the percent yield? Show calculations....
    767 Words | 4 Pages
  • The Melting Point Analysis of Crude and Recrystallized Acetaminophen Synthesized from P-Aminophenol and Acetic Anhydride
    Abstract Acetic Anhydride and p-Aminophenol were heated in a vial attached to an air condenser to synthesize crude acetaminophen, resulting in 0.097 grams (47.48% yield). The crude acetaminophen was then recrystallized in a solvent of water and methanol over heat resulting in 0.082 grams (39.61% yield) of pure acetaminophen. Melting points of both crude and pure acetaminophen were taken, and found to be 165.9 - 170.9°C and 168.2 - 171.5°C, respectively. The literature melting point of...
    1,087 Words | 4 Pages
  • Preparation of Alum - 1069 Words
    DEPARTMENT OF PURE AND APPLIED CHEMISTRY Visayas State University Visca, Baybay City, Leyte Name: Alecsa May S. Celaya BS-Chemistry 3 Date Submitted: December 19, 2014 Lab. Schedule: MW 2:00 – 5:00 pm Rating: Group No. 11 Experiment No. 5 Preparation of KAl(SO4)2•12H2O (Alum) OBJECTIVES This experiment aimed to: prepare KAl(SO4)2•12H2O, commonly referred to as alum, from aluminum metal from a canned soft drink, and determine the mass of the alum collected and its percent...
    1,069 Words | 4 Pages
  • Limiting Reagents And Percentage Yield Worksheet Answers
    Limiting Reagents and Percentage Yield Worksheet 1. Consider the reaction I2O5(g) + 5 CO(g) -------> 5 CO2(g) + I2(g) a) 80.0 grams of iodine(V) oxide, I2O5, reacts with 28.0 grams of carbon monoxide, CO. Determine the mass of iodine I2, which could be produced? 80 g I2O5 1 mol I2O5 1 mol I2 1 333.8 g I2O5 1 mol I2O5 28 g CO 1 mol CO 1 mol I2 253.8 g I2 1 28 g CO 5 mol CO 1 mol I2 b) If, in the above situation, only 0.160 moles, of iodine, I2 was...
    1,361 Words | 10 Pages
  • Gasss - 273 Words
    5.04H: Gas Stoichiometry Lab Worksheet Name: _________________________ Data and Observations: Present all relevant data in a data table below. Include an observations section for any observations that you made during the lab. (5 points) |Data Table | |Mass of magnesium strip (grams) | | |Volume of gas collected (mL) | | |Barometric pressure (atm)...
    273 Words | 2 Pages
  • Percent Yeild Lab Essay Example
    | Percent Yield Lab | | | | 4/20/2012 | Mrs.Sardella Per4 Matt , Kait Mrs.Sardella Per4 Matt , Kait | Introduction *Limiting Reactant: A reactant that is completely consumed during a chemical reaction, limiting the amount of product that is produced. *Excess Reactant: A reactant that remains after a reaction is over. *Theoretical Yield: The amount of product that is predicted by stoichiometric calculations *Actual Yield: The amount of product that is...
    1,173 Words | 5 Pages
  • Indigo Essay Example - 2263 Words
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  • Preparation and Sn1 Reactivity of 2-Bromobutane
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  • Silver and Test Tube - 639 Words
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  • Scale Up Synthesis And Characterization - 704 Words
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    Title: Experiment 28: Nitration of Methyl Benzoate Objective: The students will learn to nitrate methyl benzoate through electrophilic aromatic substitution reaction. They will learn the importance of regiochemistry in chemical reactions. They might experience disubstitution through a high temperature. Reactions: Observation: The crystals started to form when added 2 g of crushed ice. The addition of hot methanol dissociated the crystals. The crystals reappeared when cooled down...
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  • Preparation of Tin Tetraiodide - 789 Words
    PREPARATION OF TIN TETRAIODIDE 09/06/2012 Introduction The objective of this project was to prepare tin tetraiodide through the following reaction: Sn+2I2∆SnI4 and to measure the melting point of tin tetraiodide. Tin tetraiodide was recrystallized after the synthesis. The percent yield and the theoretical yield of tin tetraiodide were calculated. Recrystallization is to further improve the purity of tin tetraiodide. The solvent is carefully chosen to be toluene in order to maximize the...
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