Properties and Reactions of Hydrocarbons Abstract Introduction Hydrocarbons are organic materials that contain only carbon and hydrogen atoms‚ these molecules can be saturated or unsaturated and acyclic‚ cyclic‚ or aromatic. In this experiment we used a variety of methods to examine the physical and chemical properties of hydrocarbons. The first experiment we tested a variety of solvents to see if they dissolved our alkane (Decalin). One would expect that non-polar solvents will dissolve
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she was lazy and petulant. Parris did not see Tituba as a threat and left the girls in her watch many times. As time passed‚ more girls would come and spend time with the Barbados slave. Tituba would tell the girls stories about Barbados‚ and of the witch doctors that lived there. The girls were interested and asked many questions concerning the topic of magic and witches. Tituba‚ who hardly believed in sorcery herself‚ had given in and showed the girls how to break an egg‚ so just the egg white would
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the Puritans lived in a society where hearing a powerful positioned person or a committee say something was often believed to be truth. It seems as if the Puritans lived in a world that was half filled with lies and that they were brainwashed. The witch hunt started when the controversy of the illness of the afflicted girls became a crime‚ since the church members who dominated the power over New England‚ referred this illness to be some sort of witchcraft. In The Western Heritage‚ the author states:
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dew‚ or dry particles. • more accurate term is "acid precipitation." • defined as any type of precipitation with a pH that is unusually low The Causes: • occurs when sulfur dioxide and nitrogen oxides are emitted into the atmosphere‚ undergo chemical transformations and are absorbed by water droplets in clouds • then fall to earth as rain‚ snow‚ mist‚ dry dust‚ hail‚ or sleet. • Dissolved carbon dioxide dissociates to form weak carbonic acid giving a pH of approximately 5.6 at typical atmospheric
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Observations: Part I: Reaction between iron and oxygen Appearance of steel wool after 20 minutes From (relatively) shiny metal strips to not-so-shiny strips that are stained with dark‚ reddish-brown stuff. Part II: Decomposition of hydrogen peroxide Appearance of potato and hydrogen peroxide combination: Lots of white‚ foamy bubbles around the potato slices. Day 2 Observations: Part III: Reaction between zinc and acetic acid Appearance of penny in vinegar after
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Witchcraft‚ Oracles and Magic among the Azande Aaron Wintrich Professor Arthur Anthropology of Religion 10/30/12 2‚075 Words Wintrich II Witchcraft among the Azande is an integral part of everyday life. From highly involved communal practices to individual daily life‚ witchcraft and such happenings can take place at any time and to anyone. During his time among the Azande‚ Evans Pritchard originally thought of the Azande’s belief in witchcraft as naïve‚ believing that all mishaps were
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Trapal‚ Mariel B. Prof. T.D. Macasil BSE Physical Science Reactions of amines Reaction of amines with acids – acids and amines form ammonium salts. R – NH2 + HCl → R – NH3+ + OH – Amine acid amine salt Example 1 CH3 – NH2 + HCl → CH3 – NH3 + Cl- Methylamine Methylammonium Example 2 CH3CH2 – NH3 + Cl → CH3CH2NH2 . HCl Ethylammonium Ethylamine Reaction of amine with water – when amines react with water‚ they produce hydroxide ( OH
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Jeremiah Rigg F. MC1127 Feature Writing 1 For this Christmas holiday season‚ our family is doing something radically different. Our church pastor challenged the congregation in doing something nice for someone else for the Christmas season. You know‚ as it says in the Bible‚ "goodwill to men". We are carrying on that message to bring hope to people who are truly in need and it’s made quite an impact on
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This paper is an analysis conducted on Nucleic Acids through a variety of tests specifically‚ Dische‚ Murexide‚ Wheeler-Johnson and Phosphate Tests in order to exemplify structural features of nucleic acids as well as identify the principle involved in each chemical test. Different procedures and different test compounds were applied‚ and results were noted as for changes in colors of precipitates or solutions. For Dische Test‚ light blue was obtained for RNA and dark violet for DNA. For Murexide
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first thought to come to mind. A book titled “Memorable Providences” had recently been published telling the story of an Irish woman’s bewitchment on a man in Boston‚ the girls behaviors somewhat mirrored those of the man which sparked the thought of witch craft. William Griggs‚ a doctor of the town‚ called to examine the girls. He suggested that the girls’ problems might have a supernatural origin. The new widespread belief that witches targeted children made the doctor’s diagnosis seem increasing likely
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