Investigation 12: Using Thermodynamic Quantities Through Calorimetry to Determine the Ideal Compound for Hand warmer Author: Jane Kim (B2) Partners: Jenny Kim‚ Jeffrey Heo‚ Eugenia Lee Experiment date: March 2‚ 2017 Table of Contents 1. Abstract 3 2. Introduction 3 3. Experimental details 4 3-1. Materials 4 3-2. Apparatus 7 3-3. Procedure 7 3-4. Special Precautions 8 3-5. Lab techniques 9 4. Results 9 5. Discussion 14 6. Conclusion 16 7. References 17 1. Abstract This lab report discusses
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If you’re into arts and crafts and interested in working in concrete art‚ learning how to create your own simple statues is a great first step. It’s a relatively easy way to get your feet wet‚ learn how to properly mix concrete‚ create a mold‚ and craft the concrete into a great shape. Creating The Statue Mold While some expert concrete artists can create statues directly in the clay‚ newer concrete artists should create a small clay mold over which to pour the concrete. Creating your own statue
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In this lab we tested the purity of water by looking for the chemicals free chlorine‚ chloride‚ sulfate‚ nitrate‚ copper‚ total hardness‚ iron‚ hydrogen sulfide‚ lead‚ pesticides‚ pH‚ total alkalinity‚ and total chlorine inside a water sample. The chemicals that produced a 0.0 result meant that there was no trace of that chemical inside the sample. The chemicals not found were copper‚ hydrogen sulfide‚ free chlorine‚ lead‚ iron‚ pesticide‚ and total chlorine. As a class we found the results of
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ust imagine drinking a nice cold Minute Maid Pink Lemonade on a hot day‚ or a cold Red Powerade after a long hard practice. The cold refreshing drink rushes through your body and quenches your thirst. However‚ do you know what you are actually drinking‚ and how much of that drink is contaminated with dye? In this experiment‚ with the use of a spectrophotometer‚ the amount of concentrated dye in three drinks will be tested. First‚ the dye itself will be examined to see what the optimal wavelength
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Experiment 11 Calorimetry and Hess’s Law Purpose- To determine the change in enthalpy for four reactions using calorimetry and Hess’s Law Procedures: A. Calibration of the Calorimeter 1. Obtain two copper cylinders and a Styrofoam cup with lid from your lab instructor. Check out a digital thermometer display from the storeroom window. 2. Set up a hot water bath using a 600mL beaker‚ ring stand‚ and Bunsen burner. Weigh the two copper cylinders
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What is Magnesium chloride(MgCl2)? What is it used for and why? What does it look like? Magnesium chloride is the name of a chemical formula of MG CL two. This is a salt and they are a typical ion halide. halides are very soluble to water. magnesium chloride is used for deicing on highways in sidewalks and also parking lots it is a good source of de-icing. The color that it appears is white or colorless crystalline solid. What is magnesium or what is chloride? whare are they located? You can find
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The goal for this experiment is to determine which out of the four balanced chemical equations best represent the thermal decomposition of sodium bicarbonate. The guiding question will be answered with the outcome of the sodium bicarbonates thermal decomposition and it being plugged in into the four balanced chemical equations. John Dalton atomic theory explains two fundamental laws of chemistry which are the law of conservation of mass and the law of definite proportions. The atomic theory states
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At the beginning of the lab‚ a micro test tube with and without glass wool was weighed on an analytical balance. A watch glass‚ crucible‚ and lid were also weighed. The masses of all the materials needed for the lab were recorded in the data tables of the laboratory notebook. An unknown vial was obtained from the teacher and set to zero on the balance. About 0.6 grams of the unknown was measured into the micro test tube. The analytical balance was set to zero again and then the test tube with the
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Molar Volume of a Gas Objective: The objective is to determine the volume‚ of one mole of hydrogen gas at STP using experimental data‚ known mathematical relationships‚ and a balanced chemical equation. Theory: The goal of this lab is to find the volume of one mole of hydrogen at STP. The experimenters will be working with hydrochloric acid and magnesium to find the objective. The acid in this lab will react to the magnesium and cause the water in the eudiometer to rise because of the reaction
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various metals by observing their reaction with hydrochloric acid. Materials: 2 M hydrochloric acid Detergent Test tubes and test tube rack 0.5 pieces of magnesium‚ aluminium‚ iron‚ zinc and cooper Sand paper Ruler Timer Bench mat Method: 1. The surface of the magnesium was cleaned with a piece of sandpaper 2. The Magnesium was placed into a test tube 3. Three Drops of detergent were added to the test tube 4. 2cm of hydrochloric acid was added to the test tube 5. The timer was set
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