The Purity and Purification of Solids Melting Point Lab Introduction: The point of this lab was to determine the eutectic point for the naphthalene biphenyl mixture‚ as well as determining the melting point of an unknown substance by comparing it with two known samples. Melting point is a temperature in which a substance changes from solid state to liquid state. Melting points are used to determine whether the given substance is pure or not. Substances that melt sharply‚ less than 1-2°C indicates
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after the week the shells lost some of that weight like the first one was 1.15g but ended up with .78g the 2nd 1.42g and the third .45 the lightest of our shells. Now it turns out that the reason why shells dissolved from the vinegar is that vinegar has 4% acetic acid. If you soak an egg shell in vinegar you start a chemical reaction that dissolves the calcium carbonate shell. The acetic acid reacts with the calcium carbonate in the eggshell and releases carbon dioxide gas that you see as bubbles on
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Grierson’s life. Miss Emily‚ a supposed monument in the town‚ lives an unusual life. She comes from a well-respected family and is the last Grierson of her town. The mysterious Miss Emily embodies the Old South. Miss Emily holds onto the ways of the Old South and cannot come to terms with the New South. Miss Emily’s resistance to change her pitiful ways and the narration of the story show how Emily is isolated from the rest of the community. Miss Emily Grierson is without a doubt a product of
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focuses on a woman who’s going through depression and has had a nervous breakdown. Her husband tries to help her by moving her in a home‚ only to keep her upstairs in room (nursery) covered with a yellow wallpaper. He wants her to be isolated and recover from her depression. As part as a way to do so‚ her husband John‚ doesn’t want her using her imagination in any way but she resist at the treatment. His plan for her to get better fails. Throughout the story‚ the narrator came across learning
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Anytime you can stop a person from lighting up a cigarette‚ whether they resent the fact or not‚ you’re doing them a favor”- (Poland). In Poland’s article‚ Smoking‚ Stigma‚ and the Purification of Public Space‚ he addresses the many problems smokers go through in a day. From public ostracization because of health concerns‚ to restrictions on when and where they can smoke in public spaces. Smokers tend to smoke more often when surrounded by other smokers‚ as well as hide the fact that they smoke the
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THE CUCKOO’S EGG BOOK ANALYSIS – TRACKING A SPY Suma Lakshminarayan Book Analysis Paper Professor Jon Clark Summer Quarter 2012 11 September‚ 2012 INTRODUCTION The Cuckoo’s Egg book is well written by Cliff Stoll. It was something like reading a horror story book. It was creepy‚ suspense‚ curiosity and scary too. The hacker every time breaks into a military system seemed to be like a ghost entering into the house and not like a thief. We know thief will definitely when he
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forces that practically drown out the boys’ good intentions and extract the boys from living in a fulfilling life as a child in society within Lord of the Flies by the author William Golding seems to always be discussed first rather than talk about what little but meaningful the good forces are that remain on the island. For example‚ Jack Merridew and his tribe’s savagery is regardless of where you find source from‚ rather it be your teacher or a website like Sparknotes is usually saying the same
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The plotting subconscious fabricated their warmth around; he drew comfort from the illusion that he was not alone. He playfully rolled against the floor (filled with reckless joy‚ wondering how amused they were by his childish display of happiness) his ears smudged against the cold tiling and picked up the fractured noises of the midnight revelry in the apartment below. He denied it at first‚ the sounds were coming from his house‚ but its muffled nature struck him with the truth. Nothing but a
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provides a surface for the individual cells to be separated and isolated from the other microbial cells that may be present in the original sample. C. Compare your L. acidophilus pour plates and spread plate. Which method do you think worked better to isolate individual colonies? Why? I think spread plates worked best because a solid medium that provides a surface for the individual cells to be separated and isolated from the other microbial cells that may be present in the original sample
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Work Plan for Isolation‚ Purification‚ Identification and Starter Culture Activity of Lactoccocus lactis Submitted by: M.Usman Akram B.S. (Hons.) Dairy Technology mh.usman@hotmail.com Mobile : +923217773736 University of Veterinary and Animal Sciences‚ Ravi Campus Pattoki Lactoccocus lactis Classification: Scientific classification | Kingdom: | Bacteria | Division: | Firmicutes | Class: | Bacilli | Order: | Lactobacillales | Family: | Streptococcaceae | Genus:
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