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    Redox Titration Lab ABSTRACT: In this lab‚ 0.010 M purple-colored potassium permanganate solution was standardized by redox titration with iron (II) ammonium sulfate hexahydrate (FAS). The average mass of the three flasks of FAS was 0.483 grams. Once the concentration of the standard solution of KMnO4 (aq) was determined‚ it was used to determine the concentration of Fe2+ in iron pills. On average‚ there was 0.01813 L of solution used. With this information and the balanced net-ionic equation

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    | The Chemistry of Natural Waters | Chem 111 Sec 104 | | Hyunjung Hwang | 11/6/2012 | TA: Sarah Boehm‚ Group members: Rachel Hoffman‚ Dan Hirt | Introduction Water hardness is a major part of overall water quality that affects many industrial and domestic water users. Water is considered hard when there are high concentrations of the divalent cations Magnesium and Calcium; water hardness is considered as the sum of both the calcium and magnesium concentrations and expressed as

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    Priya Chauhan August 27‚ 2012 Period 3 Rainbow Lab Objectives: We should develop skills measuring chemicals with a graduated cylinder. We should practice using the metric system. We should have the ability to follow directions and to test precision. We should practice lab safety procedures. Procedures: Part 1: Label six tubes in order: A‚ B‚ C‚ D‚ E‚ and F. Fill a beaker half way with water. Use it to rinse your graduated cylinder and test tubes. The second beaker is for

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    Measurement of Mass‚ Volume‚ and Density through Archimedes Principle Overview: The purpose of this experiment was to measure the density of a solid and a liquid using Archimedes principle. Archimedes is one of the greatest inventors and mathematicians of all time. The principle we used in this experiment was discovered when Archimedes stepped into a full bath tub. Using Archimedes principle‚ we were able to determine the density of a lead rod‚ water‚ and an unknown liquid. Physical Data:

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    Thermochemistry Lab Hypothesis We predict that two different physical changes (dissolving of a chemical substance in water) will produce energy changes; one exothermic and one endothermic. We predict that the temperature change will be affected by the change in system (open vs. closed) will be as follows: the temperature change in the closed system will be greater than that of the open system. Materials Refer to attached sheet Method Refer to attached sheet Observations Substance Added

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    Laboratory #16: Analysis of Grease in Water by Solvent Extraction Experiment Date: 2/19/10 Due Date: 2/26/10 II. Objective The goal of this lab was to determine the amount of impurity‚ in the form of oil‚ in water using the method of solvent extraction‚ also known as liquid-liquid extraction‚ a method of separating two materials with different physical and/or chemical properties. Two methods of evaporation will be used to finally determine the concentration of impurity- one using an explosion-proof

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    Laboratory 2: Examining Dyes and Dying Introduction Dyes‚ which used on material such as cotton‚ silk‚ wool‚ and nylon appears to have color due to the partial light absorption in the visible region of the electromagnetic spectrum. Chromophores‚ derived from Greek‚ Chroma meaning color and phoros meaning bearer makes light absorption feasible. Dyes contain both chromophore molecules and auxochrome molecules; chromophore molecules include unsaturated groups‚ for instance carbon-carbon double bonds

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    Design Lab #17: Reaction Rate - Calcium Carbonate & Hydrochloric acid Design D: Introduction: In this experiment calcium carbonate will be put into a flask and mixed with hydrochloric acid to produce calcium chloride‚ water and carbon dioxide. The formula for this reaction is: CaCO3(s) + 2HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l) Purpose: The purpose of this experiment is to determine how the surface area of CaCO3(s) affects the rate of

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    Lab: investigating hooked law with springs
 
Purpose: to find spring constants of different springs using the slope of a graph of change in heights vs. the weight force. Also‚ to be able to understand how spring constants change when you add springs in a series or paralle 
Pre lab predictions:

We predicted that the graph of gravitational force (mg) as a function of stretch (delta x) would look like

Data: Spring #1: y = 8.2941x + 0.0685 
This table represents the different distances that

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    Cited: 1. "Beer ’s Law Tutorial." Beer ’s Law Tutorial. UCLA Chemistry Department‚ Sept.-Oct. 2012. Web. 14 Feb. 2015. 2. Blauch‚ David M. "Chemical Kinetics." : Reaction Rates. N.p.‚ 5 Feb. 2014. Web. 12 Feb. 2015. 3. Thorne‚ Edward J. "Experiment 6: Kinetics of Alcohol Oxidation." Laboratory Manual for General Chemistry. 9th ed. Philadelphia: Drexel U‚ 2014. 55-69. Print. 4. Tro‚ Nivaldo J. "Chapter 15: Chemical Kinetics." Chemistry: Structure and Properties. Boston: Pearson

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