preparation of aspirin and oil of wintergreen | Introduction Organic compounds are those which contain carbon as well as a select other elements. An organic acid however‚ is an organic compound which contains acidic properties. An ester is an example of being a derivative of these organic acids. Esters can be prepared by the reaction of carboxylic acids and alcohols‚ with an inorganic acid used as a catalyst which is dubbed esterification. With o-hydrobenzoic acid‚ or salicylic
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Procedure: Day 1: Buffer preparation First‚ the buffer was prepared by using the formula as follows: Figure 1: Calculation for prepare 0.5 M Tris buffer at pH 6.8 3.033 g of Tris was weighed and placed in 400 mL beaker. Then‚ 25 mL of distilled water was added into the beaker that contained Tris. The mixture was dissolved using the stirring rod‚ and then the magnetic stirring bar was placed in the beaker for further dissolve when measuring the pH. The pH meter was used to measure the solution
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Indirect characterization is shown throughout the story to show the traits of the characters by what they say and what they do. The readers are able to have a sense of who the character is by indirect characterization. For example‚ “A yard like this is more comfortable then most people know. It is not just a yard. It is like an extended living room”
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100 Basic Terminologies on Food Preparation Bake: To cook in the oven with dry heat. barbecue: To cook on a rack or spit over hot coals or some other source of direct heat. baste: To spoon pan juices‚ melted fat‚ or another liquid over the surface of food during cooking to keep the food moist and add flavor. beat: To mix ingredients together with a circular up and down motion using a spoon‚ whisk‚ or rotary or electric beater. bind: To thicken or smooth out the consistency of a locked. blanch:
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generation of Europeans. A conflict between Central powers and Allied powers which was soon to be known as World War One. The three main reasons that caused WW1 were Alliances‚ the Assassination of Archduke‚ and Nationalism. The main importance for indirect causes of World War One was the alliance system that was in place foregoing to the outbreak of the war. By the early 20th century‚ Europe was seen as two well equipped camps on one side the triple Alliance was established between Germany‚ Austria-Hungary
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Title: Preparation of Cyclohexene from Cyclohexanol Aim: To prepare an alkene‚ cyclohexene‚ by the dehydration of an alcohol‚ cyclohexanol‚ and better understand the processes that take place during this reaction. Introduction: One of the common ways of preparing an alkene is through the dehydration of an alcohol. In this experiment cyclohexanol is dehydrated to prepare cyclohexene while using sulfuric acid as a catalyst. A bromine test can be later done to ensure that the end product is
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To what extent was Stalin Prepared for War by 1941? In 1941‚ The Nazi Government of Germany put ‘Operation Barbarossa’ into practise. An invasion of Russia’s land for the purpose of Lebensraum. Stalin quickly set into action and a war began on the Eastern front. Some Historians debate on whether Stalin was ready for war by 1941‚ or not. It could be argued that Stalin was ready for war by 1941‚ due to the size of the army. By 1941‚ there were 5 million red army soldiers enlisted. Coupled with 230
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When you think of a mummy what comes to mind? Most of us usually picture an Egyptian mummy wrapped in bandages and buried deep inside a pyramid. While the Egyptian ones are the most famous‚ mummies have been found in many places throughout the world‚ from Greenland to China to the Andes Mountains of South America. A mummy is the body of a person (or an animal) that has been preserved after death. Normally when we die‚ bacteria and other germs eat away at the soft tissues (such as skin and muscles)
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Discuss whether indirect taxes on petrol should be reduced Petrol is seen as a de-merit good as it can cause market failure as the free market may fail to take into account the negative externalities of consumption (pollution) because the social cost exceeds the private cost. Consumers too may experience imperfect information about the long term costs to themselves of consuming products deemed to be de-merit goods By imposing indirect tax on producers it raises their costs of production‚ shifting
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Indirect causes of WW1.notebook February 10‚ 2012 World War One: 1914‐1918 World War One was known as "The Great War" Causes of World War One Direct Cause (immediate): ‐specific event and/or series of events that led to the outbreak of fighting Direct Cause of World War One: Indirect Cause (long range) ‐developments‚ events‚ etc. that occur over a longer period of time that create the conditions in which war is possible ‐Indirect Causes of World War One: Feb 38:06 AM 1) Alliances
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