Nitrophenols | | | | Abstract: Using a micro scale steam distillation we separated ortho and para-nitrophenol from a mixture that was already made. After the para and ortho were separated we measured their melting points and compared it to the literature values for purity. For ortho-nitrophenol we had 60% recovery and for para 160% recovery. Our melting point ranges were ortho: 45-46°C and para 64-95°C. Introduction: Nitration: In phenols‚ -OH group strongly activates the ring system. As
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Four major types of parasites: * Helminthes * Nematodes * Round worms * Cylindrical * Blood‚ tissue and intestinal * Trematodes * Flukes * Leaf-like worms * Flat worms * Cestodes * Flat or tapeworms * Segmented * Protozoans (non-helminthes) * Imaginary parasites * Malarial parasites * Miscellaneous parasites * Immuno-compromised parasites 3 Stages of eggs:
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Zachary Solini English 111 Descriptive Essay Sitting on a hard wooden bench‚ the world around me fades away and my full consciousness focuses only on what lies before me. My eyes close and breathe in the scent of maple wood and ivory keys that rest beneath my hands. Their elegant cool feel on my fingertips both calms and excites me‚ as the butterflies flutter ecstatically in my stomach and the rush of the adrenaline flows through my veins. My attempts to remain calm are feeble; I am nervous
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Verbal and Visual Representation of Women: Como agua para chocolate / Like Water for Chocolate By MARÍA ELENA DE VALDÉS Como agua para chocolate is the first novel by Laura Esquivel (b. 1950 ). Published in Spanish in 1989 and in English translation in 1992‚ followed by the release of the feature film that same year‚ the novel has thrust this Mexican woman writer into the world of international critical acclaim as well as best-seller popularity. Since Esquivel also wrote the screenplay for director
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Krystal Wu Ms. Alex Student should be rewarded for grade because getting reward motivates students to improve their learning skills which help them get good grade next time. Reward as a force motivates student to study so that student will spare no effect to achieve their goal‚ but students will meet many difficulties during learning process. For example‚ sometimes students may make many mistakes in math or reading. If student want to be excellent in every test‚ they must learn from errors. According
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The effects of work schedule to the work performance and health conditions of a call center worker or agent at SPI Global CHAPTER 1 THE PROBLEM AND ITS BACKGROUND INTRODUCTION Work schedule is great factor when it comes to performance in a call center industry. Health is greatly affected by work schedule since most of the call center companies have drastic changes when it comes to working schedule even within just a week and even other center have mandatory OT’s (Overtime). Being
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Para Quinone Dioxime (PQD) What is PQD? PQD is a non-sulphur vulcanizing agent for synthetic elastomers. It is used extensively for rapid curing of butyl stocks requiring heat resistance. Butyl of this type is used to fabricate high voltage wire and cable products‚ moulded electric components‚ and heat resistant seals and hose. PQD has also been used as part of the curative system for liquid butyl elastomers. These compounds are formulated as coatings‚ sealants and electrical encapsulants. The
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In The Story of Joseph‚ we learn that Joseph has the ability to interpret dreams and for this reason‚ Pharaoh gives Joseph authority which elevates him above nearly everyone in Egypt. Joseph proves the accuracy of his interpretations on more than one occasion. First‚ Joseph interprets is own dream which indicates that one day Joseph’s brothers will bow to him. Later in the story‚ we find out that after Joseph was sold into slavery‚ he was later reunited with his family and his brothers bowed
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In the book “Bad Dreams” the theme is that odd is not always a bad thing ‚ in the story Mel one of the main characters is trying to figure why her friend Imogen is scared to read books‚ yet she is a great writer. The author of the story “Bad Dreams” is Anne Fine ‚ this story takes place in many places but the main place is school. The two main characters in this story are Imogen and Mel‚ Imogen is the new girl trying to fit in and hide her secret‚ Mel on the other hand is the “Nosy” one she likes
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A Midsummer-Night’s Dream (Charles Lamb very important for understanding the whole story) THERE was a law in the city of Athens which gave to its citizens the power of compelling their daughters to marry whomsoever they pleased; for upon a daughter’s refusing to marry the man her father had chosen to be her husband‚ the father was empowered by this law to cause her to be put to death; but as fathers do not often desire the death of their own daughters‚ even though they do happen to prove a little
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