The Osmosis Lab SHS Lacrosse Monster #2 Dates performed: 10/10/11 and 10/11/11 Introduction: The purpose of the laboratory investigation was to observe the diffusion of water across a semi-permeable membrane. In this lab‚ dialysis tubing was used to represent the semi-permeable cell membrane. Three dialysis tubes were prepared with 5% sucrose solution and were soaked in solutions of different concentrations. The diffusion of water across a semi-permeable membrane is called osmosis. When
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10.1 CHARLES PERKINS AND THE FREEDOM RIDE CHARLES PERKINS Kumantjayi (Charles) Perkins was born in Alice Springs in 1936. His early education was at school in Adelaide. A skilled soccer player‚ Perkins played professional soccer in England from 1957 to 1960. Having turned down an offer to try out for Manchester United‚ he returned to Australia to coach a local Adelaide team. Here he became vice president of the Federal Council for the Advancement of Aborigines. Perkins moved to Sydney in 1962
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Problem What effect does the different concentration of hydrochloric acid have to the rate of diffusion of agar that is dissolved with sodium carbonate and phenolphthalein? Introduction Diffusion is a process where the molecules intermingle as a result of their kinetic energy of random motion and is the net movement of like molecules down their concentration gradient‚ which is the energy inherent in their constant molecular motion makes them collide and careen outward from the region of higher
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Jeanine Campa Biology 101 10/20/2010 Ecology-Interspecific Interactions Lab Intro: Ecology is the study of how organisms interact within their environment. Every species interacts with its surroundings‚ whether it’s within their populations‚ community‚ ecosystem‚ etc. In this lab‚ we will be comparing two different species and how they grow alone as well as together‚ in the same environment. More specifically‚ in this lab‚ we will be dealing with one of the most important ideas in ecology‚ the
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Charles Dickens and Samuel Clemens (1812-1870) (1835-1910) Charles Dickens and Samuel Clemens lived in different parts of the world‚ England and America. Charles Dickens was twenty-three years old when Samuel Clemens was born. Charles Dickens was a boy who loved learning‚ while Samuel Clemens could hardly wait for school to end. Despite the fact that both authors reference Christianity and its customs‚ historians believe that Charles Dickens was a Christian whereas Samuel Clemens was not.
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human-beings‚ Charles Bulfinch brought European taste and design to the arid land of architecture in Boston‚ ushering in a new era in the name of Federal Architecture. After the revolution‚ as what Thomas Pemberton said‚ Boston was capable of great increase‚ as many large spaces of land still remain vacancy. Meanwhile‚ frequent devastating conflagrations kept the building trade busy and changed the appearance and layout with some regularity. All these situations made it possible for Charles Bulfinch
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Fermentation Lab: Conclusion & Evaluation of the Effect of Type of Carbohydrate on Amount of CO2 Produced IB Biology/Topic: 3.7 05 February 2013 Question: Which type of carbohydrate‚ glucose‚ sucrose‚ or starch‚ will produce the greatest amount of fermentation over the class period? Why? Hypothesis: If the carbohydrate starch is added to the set up of yeast‚ then it will create the greatest amount of fermentation because starch is a polysaccharides
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Investigation and Preparation of Esterification Lab Introduction Esters are classified as organic compounds commonly derived from carboxylic acids. They are compounded from the reaction of a carboxylic acid with an alcohol in the presence of a strong acid to be used as a catalyst. The formula that represents an ester is R-COO-R where both Rs’ are alkyl groups‚ one which is bonded to an oxygen‚ and the other to a carbon which is double bonded to 1 oxygen and single bonded to the other. Esters
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The Dynamic Life of Charles A. Lindbergh Daisy Fuentes HIST-018‚ Sect. 3940 Prof. Zimbala 30 Nov. 2012 Daisy Fuentes Prof. Zimbala HIST-018‚ Sect. 3736 30 Nov. 2012‚ Research Paper The Dynamic Life of Charles A. Lindbergh Most people know Charles A. Lindbergh as being the first aviator to fly solo non-stop across the Atlantic Ocean. This historic event for which he earned world-wide acclaim occurred when Charles was a young man after
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In each station there was a positive and a negative control. If the substance was the same as the negative control then it was negative. If the substance was the same as the positive control than the substance is positive. In the first lab we did the Paper Spot test‚ one would have had to apply the substance on a cardboard like paper. If it looked oily it was the biomolecule called lipid. The result of test one was it stayed the same‚ it did not turn oily and was clear. Next was the test
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