compound of interest and its contaminants • Basic technique: 1. dissolve impure sample in an "appropriate" hot solvent Part A: Choosing a Solvent Part B: Purification of Phenacetin 2. cool solution slowly to induce crystal growth 3. filter resulting mixture to isolate crystals Reading: Mohrig‚ Hammond & Schatz Ch. 15 pgs 183-197 Ch. 10 pgs 104-113 Ch. 14 pgs 174-182 • Scale: 5-10 mg discovery based research - a new material prepared in a lab 1‚000 kg + commercial applications - sugar
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National Institute of Geological Sciences Laboratory in Principles of Geology Geology 11.1 Laboratory Manual Name: _____________________ Student #: ___________________ Section: ____________________ Copyright © 2003 National Institute of Geological Sciences. All rights reserved. National Institute of Geological Sciences Laboratory in Principles of Geology Representing the Surface of the Earth Objectives To be able to interpret the data represented on a map To be able to identify
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Wood frog-protects its organs by freezing solid. Ice wine-frozen grapes-the shrunken nature of the grapes is due to water loss-the less water in grapes‚ the fewer ice crystals there are to damage the delicate membranes of the fruit. Sugar is a natural antifreeze- this is probably why people developed diabetes during ice age (younger dryas) and people nowadays are more frequently diagnosed with diabetes from November to Freburary‚ when it is colder. Natural selection survival rule-LOSE THE FINGER
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Pre Lab 1a. Hydrated compound: ionic compound which contain water molecules inside their crystal lattice. The water is not chemically bonded to the crystal in any way and can be extracted by heating the compound. 1b. Anhydrous compound: a compound without water. 2a. The dot means that there are water molecules present in the crystal lattice in a specific ratio. 2b. For every mole of copper sulfate‚ there are five moles of water. 2c. The molar mass of copper (II) sulfate is 159.61 grams/mol
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of nature—plants‚ natural fibers‚ materials and lighting—as well as crystals and gemstones. Combined with feng shui design‚ blessings‚ space clearings and other modalities‚ we can recreate that harmonious balance in our work and living spaces. One of Earth’s greatest gifts to us is crystals and gemstones. The rising consciousness of the planet is finally leading us to rediscover the ancient and forgotten healing art of crystals. Each natural crystalline structure has its own individual energy as
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less acknowledged—techniques is crystal healing. Crystal healing is a brand of alternative medicine that involves specific crystals being placed on specific parts of the body. These specific placements are because the crystals correspond to chakras that allow the body of the treated person to have accelerated healing. There are a large amount of healers who currently use this technique to treat their patients today. There are many cases where the patients of crystal healers have improved their condition
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A Crystal Clear Reflection of Reality In the middle of the billions of people in this planet‚ we are made. In the middle of the widest plain in our world‚ we are found. Why? It is because of the existence our so-called purpose. It was the day the world had a glimpse of another blessing from God. It is not a matter of logical thinking but spiritually speaking‚ we are also made because of God’s purpose. We came into this world with an unknown future waiting for us. Just like what
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PIEZOELECTRICITY AND APPLICATIONS Piezoelectricity is the ability of some materials such as crystals and certain ceramics‚ to generate an electric potential in response to applied mechanical stress or heat. If the piezo crystals are not short-circuited‚ the applied charge induces a voltage across the material. The word Piezo is derived from the Greek “Piezein”‚ which means to squeeze or press. The piezo material exhibits both “Direct piezo electric effect” as well as ‘Converse piezo electric
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acetanilide 5. 38 ml total solvent volume 7. Added tip of carbon black to mixture and mixture almost boiled over! 8. 28 ml total solvent volume C. ISOLATING THE RECRYSTALLIZED PRODUCT WITH VACUUM FILTRATION 2. Chilled crystals in ice bath for 19 minutes. collected flaky white crystals Mass of watch glass and acetanilide = 22.5478 Mass of watch glass = 21.6903 Mass of recovered acetanilide = 0.8575 g Mass of impure acetanilide = 1.5637 g Percent recovered = 54.8 % D. DETERMINING THE MELTING
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Marketing 7100-01 Crystal Pepsi A Giant’s Failure Fawad Anwar 6/24/2014 Crystal Pepsi: A Giant’s Failure I. Introduction Brief history of PepsiCo Brief Overview of Crystal Pepsi II. Marketing Mix Product – Crystal Pepsi and its product strategy (answering what and why) The making – Crystal Pepsi Launch Taste – The different taste promised by PepsiCo to its consumers Packaging – The attractive packaging
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