Vacuum aspiration

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    Flask Synthesis Lab Report

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    The amount of a milliliter of acetone per 50 mg crude material was added to the 25 mL Erlenmeyer flask. The flask was warmed on the sand bath to dissolve the acid (note: acetone has low BP). The solution was cooled to room temperature for about 5 minutes. If no crystals were formed, scratch the inside surface of flask with glass stirring rod to induce crystallization (note: if still not formed, continue anyway). The solution was cooled in an ice-water bath. The scratching step was repeated when no crystals were formed. The solution was cooled in the ice-water bath for another 15 minutes. Crystals were collected by vacuum filtration on a small Hirsch funnel. The crystals were rinsed. The funnel was lifted slightly to break the vacuum. The crystals were covered with about 1 mL ice-cold acetone. The vacuum was reapplied immediately after. The crystals were air-dried for a few minutes and transferred onto a tared piece of 9 centimeter filtered paper. A melting point of the crystals was obtained using a small sample after the crystals were dried to a constant…

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    Muted Stars Research Paper

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    Something pulls at my heart when I look into the stars. Something in the great beyond pulls at me, calling me, begging me to claim it as my own. Something in the great nothingness that envelopes our tiny planet is beckoning me. Maybe it’s nothing. Maybe it’s a fool’s hallucination, the manifestation of a child’s dream. Maybe it is a call that was meant to be answered by men and women far greater than I’ll ever be. Maybe the signal got lost on it’s way to find Earth’s next great hero and instead…

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    instruments. Each one varies due to the certain make and model of the vehicle with the different variations on the particular vehicle. Take a truck for instant it has a speedometer, tachometer, and transmission temperature gauge. Due to the fact that it will be towing a heavy object and be putting stress on the motor, so it doesn’t get too hot the gauge is there to protect it. Now on a sport car your two main instruments will be the speedometer and the tachometer. The speedometer is there to…

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    The light began to flicker. She rotated to the light switch gently. Nobody was there. Maybe the light bulb is loose, she thought to herself. She pranced upon her bed, which was beneath the light, and tried to screw in the light bulb a bit more. there was nothing wrong with the light bulb. She tilted her head in confusion. Maybe it gave out, she convinced herself. Wait didn’t I just change it today? Her thoughts commenced to gallop wildly in her head. Suddenly, there was a deep chuckle in the…

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    Lightbulb Economic Impact

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    Imagine waking up at sunrise and tucking in your bed at sunset. Then, after many years, while striking stones, you discover fire, something that would help you stay awake at night in presence of light. Burning firewood and lighting up oil lamps remained sources of light until the Nineteenth century when the Incandescent light bulb was co-invented by two scientists - Thomas Edison and Joseph Swan. Since then, the lightbulb has been the invention of the 19th century that has shined on us for…

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    Dental Clinic Case Summary

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    water for procedures and if the switch over the table with computer is on. If all is on and chair is still not working, we let know our lead nurse as soon as possible and she will contact DGB company who does maintenance and repair for our dental surgery. Dental chair is tested on annual bases and records of the testing or repairs are kept in folder on the reception. b) Aspirator We are testing aspirator practically every day when we start. We lift aspirator and if it 's not working we check…

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    committee" of anesthesia and intensive care department, Ain Shams University. Informative consent was obtained from the parents before enrolling in the study. 100 Patients were enrolled in the study (divided into two groups 50 patients in each), with a range of age between 2 and 6 years old. All patients were with American society of anesthesiology (ASA) physical status of 1 or 2 and were undergoing tonsillectomy operations. Group A : Fifty patients for whom modified pediatric Magill forceps…

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    Small Vacuum Cleaner Speech

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    English: Small vacuum cleaner English: Small vacuum cleaner (Photo credit: Wikipedia) If you are a keen shopper who keeps an eye on online news rather than rely on printed national newspapers, then you may know the fuss and nonsense of the new EU law that has come into force for lowering vacuum cleaner motor watts to a maximum of 1600 watts and then in 2017 lowering it further to just 900 watts. If you are in the U.S or Canada, this kind of news may not apply to you since the U.S and Canada…

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    While these developments may seem very beneficial, they are harmful in that unemployment rates increase every time another machine is created. Vacuum cleaners replaced the jobs of those who would toil away and make sure every fiber of an expensive rug was properly cleaned and colored. Some of these carpet workers could even restore carpets to their original grandeur. One could also say that, with the creation of the vacuum cleaner, people became lazier. In fact, this is one point that affects…

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    Shark Rotator Professional Lift Away Euro-pro has been bringing to the market very innovative high quality floor care products for the last two and a half decades. Their vacuum models are mid-priced and provide great customer satisfaction. Hey back their products with some generous warranties.TheShark Rotator Professional Lift Away tops the list of quality vacuum cleaners with its amazing features and ease of use. Features of the Shark Rotator Professional Lift-Away NV501 Lift-away capability…

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