Title : The movement of substances across a semi permeable membrane Objective : To study the movement of substances across a semi permeable membrane Problem statement : What factor influences the diffusion of substances through a semi permeable membrane? Hypothesis : The diffusion of molecules across a semi permeable membrane is based on the size of the molecule Variables: a) Manipulated : Size of solute molecules b) Responding : Colour of solution c) Fixed : Temperature and time
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groups known as aldoses. Benedict’s reagent is used to determine if a reducing sugar is present. Benedict’s reagent is used as a test for the presence of all monossacharides and generally also reducing sugars. These include glucose‚ galactose‚ mannose‚ lactose and maltose. Even more generally‚ Benedict’s test will detect the presence of aldehydes (except aromatic ones) and alpha-hydroxyl-ketones‚ including those that occur in certain ketoses. Benedict’s reagent contains blue copper(II) ions (Cu2+)
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7181 West East Lane 18489 Detroit‚ Michigan date Dear Mrs. Jenkins‚ I was interested when reading ’The Extraordinary Education of Nicholas Benedict.’ It was different to read a story about an orphan in a orphanage. The exposition (characters‚ plot‚ conflict‚ beginning)‚ starts off with Nicholas being sent to Rothchild’s End‚ while being escorted by Mr. Collums. I think this story is man vs. man‚ man vs. self‚ and man vs. nature. Nicholas has to cope with
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• Purpose in mind Albert Lau feels that national history is established with a particular intention. The nature of this purpose could either be in a nation’s effort to foster a sense of belonging or even identify amongst its citizens or the state’s means to nation-building. In the context of Singapore‚ the perspective in which the Singapore Story‚ the official national history‚ is written is one which can be used in achieved in its “agenda of nation-building”. • Shaper of national identity
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Imagined Communities The concept of nationalism‚ according to Benedict Anderson‚ has never been deeply discussed. There has never been a great thinker treating this concept as thoroughly as other concepts. Anderson suggests that one should not think of nationalism as an ideology like “fascism” or “liberalism”‚ but to relate it with “kinship” and “religion” in order to understand the similarity that groups of people have and why the territory that they live help one understand the borders that we
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Benedict Arnold by:Andrew Merrifield Revolutionary War Biography 5th Grade Literacy May 11‚2017 Why did Benedict Arnold go from patriot to traitor? Why did he go on the british side? Benedict Arnold was a general in the British army. Find out about his early life‚ adult life and contribution to the Revolutionary War which make him a hero of the British army.
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Introduction Grignard reagents are good nucleophiles as well as strong bases (Weldegirma). It allows compounds to react with acidic compounds‚ therefor is must be free from acids as well as water during the desired reaction. Another important aspect of Grignard reagent is that refluxing is necessary to carry out the reaction (Weldegirma). The reagent has been studied for a very long time period. As early as the 1920’s‚ Grignard reagents could be identified and studied qualitatively
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and maintained the temperature of the reaction mixture between 35-40 ̊ c by using hot water path. After that‚ 10 drops of the reaction mixture from the flask were taken after 10 minutes and added to a test tube which contained 1.00 ml of Benedict’s reagent. The test tube was placed in hot water for about 2.00 minutes and changes in color were noticed. The last step was repeated every 10.00 minutes for 6 times. The same procedure was used for carrot solution and rate of fermentation for both solutions
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ETHERS Classification of Ethers: Symmetrical ethers – two groups attached to O are identical Ex. CH3CH2OCH2CH3 – diethyl ether Unsymmetrical ethers – two groups attached to O are not identical Ex. CH3CH2OCH3 – ethyl methyl ether Physical Properties of Ethers: Ethers have much lower boiling points compared to alcohols of comparable MWs. BPs of ethers increases with increasing MW. BPs of isomeric ethers increase with increasing alkyl chain length. BPs of ethers are about the
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1. Benedict Anderson/Imagined Communities: Reflections on the Origin and Spread of Nationalism: 1983 (Revised 2006)/Brooklyn‚ New York 2. What is the central theme – the topic – of the reading? “The reading is about....” Anderson articulates that a nation is an “imagined political community – and imagined as both inherently limited and sovereign” (6). People will not meet every person in their community and nationalism has been proven to be hard to define. The people from the same community will
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