EXPERIMENT 1 “HOW DO I LOVE THEE LET ME COUNT THE WAYS...” DETERMINATION OF AVOGADRO’S CONSTANT Techniques Calibration drop counting MSDS available for • • stearic acid‚ CH3(CH2)16COOH cyclohexane‚ C6H12 Principles molar volume molecular structures surface areas and volumes Avogadro’s constant percent error Recommended Advanced Reading Chapter 3 in Petrucci‚ Herring‚ Madura‚ & Bissonnette’s General Chemistry‚10th Ed. Avogadro Constant...1 INTRODUCTION
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your soul carefully‚ lest you forget the things your eyes saw‚ and lest these things depart your heart all the days of your life. And you shall make them known to your children‚ and to your children’s children.” Deuteronomy 4:9. (USHMM) Were the experiments that the Nazi’s conducted on the Jew’s beneficial or detrimental to the advancement of science? I think to understand the question we must understand the why‚ of the situation. For example Dr. Fritz Klein’s response to Dr. Ella Lingens-Reiner
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Since there are many different definitions of handedness‚ the results of my experiment could be significantly affected by my choice. For the definition that I will use in this case‚ handedness is the hand that one prefers and performs better in use. Because the two most common definitions were the hand that one prefers‚ or the hand that one prefers to use‚ I made my own definition of combining together. In this experiment‚ handedness has to match both of the conditions of preference and performance
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Experiment #10 & #11 The Synthesis of Cobalt Oxalate Hydrate The Synthesis of a Nitrite Complex February 5‚ 2012 Chemistry 1211L - 146 - Spring 2012 Procedure The Synthesis of Cobalt Oxalate Hydrate Place 100 ml of distilled water in a 250-ml (or 400-ml) beaker. Add 1.26g of oxalic acid dihydrate (H2C2O4.2H2O) and 1 ml of concentrated ammonia. Stir the mixture until the solid has dissolved completely. Dissolve 2.34 g of cobalt chloride hexahydrate (CoCl2.6H2O) in 100 ml of water
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Our objective for the Sherlock Holmes Experiment was to illustrate that some chemicals can be identified or differentiated by simple chemical tests‚ such as solubility‚ pH‚ or color tests. In our group we had to test come common powders such as Alka-Seltzer‚ baking soda‚ flour‚ Vitamin C (ascorbic acid)‚ and salt. Other chemicals that were used to do this experiment were vinegar‚ and Iodine 2 Solution. The equipment used to do this experiment was red litmus paper‚ and 5 test tubes per group.
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Caffeine’s Effect on Blood Pressure in Teens Research Questions How does the caffeine in coffee affect the blood pressure in teens within an hour? Purpose The purpose of the lab is to see the different effects of coffee in teenagers who have a different lifestyle. Also‚ my purpose is to be informed as well considering I’m a 17-year-old teen that drinks coffee on a regular base. I would like to know how all the coffee I have ever drunk‚ has had an effect in my body that I’m not aware of. Hypothesis
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Cartesian Diver Essay The Cartesian Diver is named after the French scientist Rene Descartes. This experiment is supposed to show buoyancy‚ density and different forms of matter at work‚ when demonstrated. To create the Cartesian Diver‚ you’ll simply need: • A empty plastic bottle • A plastic eye dropper • Water 1. Fill the bottle with water‚ but be cautious of spills. 2. Very carefully‚ drop the dropper inside the bottle. Then‚ seal the cap on very tightly. 3. Squeeze the bottle‚ but not too
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at a specific interval to give a range of varying speeds; these speeds could then be compared to the set speed limit on the road. The purpose of this experiment was to determine if cars on Woody Hayes Drive needed additional traffic control to reduce speeding. The sections that follow describe the process‚ calculations and answers to this experiment. Section 2 will describe the tools and step-by-step processes that’re required to replicate this study. Meanwhile‚ section
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sensor‚ ECG sensor‚ breathing rate sensor‚ thermometer‚ TI-84 calculator. The experiment began using a TI-84 calculator as a random number generator‚ and 1-4 inputted into the calculator to determine order. Numbers 1-3 were inputted to determine the order of experimental groups for the participant. A plastic tub was then filled with a liter of water at 25℃‚ and a thermometer was placed into the water to verify. The experiment was divided into three sections; 30 seconds before submission‚ during submission
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carry out the experiment. Firstly‚ varying the length of boiling might not be the best method to determine the amount of calcium ions. If time permits‚ I could perhaps investigate other variables such as pH‚ surface area and concentration and their effect on calcium leaching. Moreover‚ I could also use other types of fish soup stocks and compare to determine which soup has more calcium in it. Lastly‚ I have purchased “cleaned” anchovies from the supermarket to carry out this experiment‚ where the head
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