• Using Freezing-Point Depression to Find Molecular Weight Formal Lab Report
    Using Freezing-Point Depression to Find Molecular Weight Formal Lab Report Purpose: The purpose of this lab is to be able to use the freezing point of a substance to find the molecular weight of it. To do this, we will use the Logger Pro program to obtain the freezing point of lauric acid and a...
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  • Molecular Weight by Freezing Point Depression
    The melting point is the temperature at which the crystal structure of a solid breaks down with increasing entropy (+ΔS). Solute particles introduced into the solvent increases the entropy, and therefore decreases the temperature of the solution in order to reach the melting or freezing point of the solution...
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  • Pure Water Graph
    Peter Jeschofnig, Ph.D. Version 42-0149-00-01 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...
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  • Ap Chemistry 1
    outcome, both as demonstration and participation exercises. The laboratory activities listed are recommended by the AP College Board, but other similar labs may be substituted. A minimum of 20 of these will be performed during the year. Each week, 120 minutes should be allocated for a laboratory experiment...
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  • Freezing point depression lab
    Using Freezing-Point Depression to Find Molecular Weight Abstract: In this lab, the purpose was to use the freezing point depression method to determine the molecular weight of aspirin. This was done by determining the freezing of t-butanol and that of a t-butanol and aspirin solution; then finding...
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  • salt solution
    are going to deal with is colligative properties. One colligative property that was dealt with in this lab was the freezing point depression, which is the process of decreasing the freezing point of any solvent by adding an unknown solute because the solute atoms affect the attractive powers between...
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  • Roberto Y Montecarlo
    between moles and grams of a substance is often important. This conversion can be easily done when the atomic and/or molecular mass of the substance(s) are known. Given the atomic or molecular mass of a substance, that mass in grams makes a mole of the substance. For example, calcium has an atomic mass of...
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  • Report
    Ch. 8 Review Molecular Geometry and Bonding Theories (Ch. 9) • Ch. 9 Text Problems: 17,19,21,31,35,43,49,57,59,63,67 • Bonding Questions Ch. 9 w/s • Molecular Geometry Notes • Molecular Geometry Practice w/s Molecular Geometry and Bonding Theories (Ch. 9) • Bonding Questions • Molecular Geometry / Bonding...
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  • Determining Molecule Weight by Freezing Point Depression Method
    4 DETERMINING MOLECULE WEIGHT BY FREEZING POINT DEPRESSION METHOD STUDENT NAME : ID : LAB PARTNERS | | INTRODUCTION According to Anne, n.d, the freezing point of a liquid is decreased by adding to another compound to it. This is known as freezing point depression. The pure solvent will have...
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  • Colligative Props Lab
    Chemistry Name: Colligative Properties Lab Blk: Date: Freezing Point Depression of Acetic Acid – Acetamide Solution Lab#________ Introduction: How does antifreeze lower the freezing point of water in the cooling systems of automobiles? In the late nineteenth century the French...
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  • Colligative Properties & Osmotic Pressure
    Title: Colligative Properties & Osmotic Pressure Background: Important terms to study from this lab assignment are colligative properties, membrane permeability and osmotic pressure. First, colligative properties are “those of a solution that depend solely on the number of solute particles present...
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  • Chemistry 16 Lab Manual
    35 Colligative Properties GENERAL INSTRUCTIONS TO THE STUDENTS Apparatus ▪ Check each piece of apparatus, which you find in your locker from the duplicate list furnished to you by your instructor. Sign your name and submit to your instructor. The instructor signs the checklists...
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  • Chemistry Formula
    molecules or ions solute. Table 1 gives data for several common solvents. Table 1. Molal Freezing Point and Boiling Point Constants | Solvent | Formula | Freezing Point (°C) | Kf(°C/molal) | Boiling Point (°C) | Kb(°C/molal) | Water | H2O | 0.0 | 1.86 | 100.0 | 0.51 | Acetic acid | CH3COOH |...
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  • What Makes Ice Melt Faster
    both of these instances, salt is acting to lower the freezing point of water. For the ice cream maker, because the rock salt lowers the freezing point of the ice, the temperature of the ice/rock salt mixture can go below the normal freezing point of water. This makes it possible to freeze the ice cream...
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  • Deicer Magnesium Chloride
    Jeff Tanaka, and Yang Zhao Group 3 “I pledge that this report, the data in it, and interpretations are my work, except where referenced. I have neither obtained nor given aid on this assignment outside of data discussions with my lab team. “ Signed_________________________________________ ...
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  • Intermolecular Forces
    arrangement of the atoms, ions, or molecules of the substances and by the strength of the forces of attraction between the atoms, ions, or molecules. C4.4: Molecular Polarity The forces between molecules depend on the net polarity of the molecule as determined by shape of the molecule and the polarity of the bonds...
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  • Chemistry Lab
    Chemistry 121 Colligative Properties Lab Demonstration of Selected Calculations from Choice I Determination of Kf for Naphthalene To determine the Kf for naphthalene, we need to find the difference in the freezing point of pure naphthalene and the solution of 1,4-dichlorobenzene in naphthalene. Let's...
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  • Freezing Point Depression
    substance D is Glycine. 2) Finding the concentration of a known solution Table 1.2: Table used for the preparation of the calibration curve used to find the concentration of alcohol in a wine. 0.2mL of each sample were taken and placed in the Osometer. Ethanol sample (g EtOH/100mL) | Osmolality (mOsm/kg...
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  • Chem
    LAB ATO BIOCHEMISTRY LABORATORY PERIM EXPERIMENTS CHE 4350 ANDREW J. BONHAM, Ph.D. and KELLY M. ELKINS, Ph. D. with original materials by Stephen Poole, Ph.D. BONHAM CHE 4350 SPRING 2012 1 TABLE OF CONTENTS Title Page Table of Contents Introduction Laboratory Safety Avoiding Contamination...
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  • Niimee
    Colligative properties Objectives: * To be able to compute the Freezing point, boiling point, Vapor pressure, and Osmotic Pressure of the Solution. Colligative properties depend only on the number of dissolved particles and not the identity of the particles. As a result, compounds that dissociate...
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