(2) To specifically use solution stoichiometry to determine the percent of acetic acid in vinegar. (3) To prepare a standard solution by the method of titration. Consider the following balanced chemical equations: (1) HCl + NaOH ------> NaCl + HOH (2) H2SO4 + 2NaOH --------> Na2SO4 + 2HOH (3) 2HCl + Ca(OH)2 ---------> CaCl2 + 2HOH (4) H2SO4 + Ca(OH)2 ---------> CaSO4 + 2HOH (5) 2H3PO4 + 3Ca(OH)2 ---------->
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in 1901‚ Theodore Roosevelt was the youngest U.SPresident. he suggested important legislation and signed landmark laws to protect health and welfare to americans. he was one of the founders of the Boone and Crocket Club. he promoted the hunting the game of hunting animals and the protection to their habitats. in 1903‚ roosevelt created the first national wildlife refuge in florida‚ he signed the Arntiquities Act of 1906. he prepared to protect the Grand Canyon in 1908‚ Gifford Pinchot was a friend
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in Part 2 of this worksheet. Help: The minerals in the virtual lab are numbered to conceal their identities‚ but the minerals will include seven of those listed below. To help you identify them‚ refer to the Mineral Identification Job Aid. Borax Calcite Corundum Graphite Gypsum Orthoclase feldspar Pyrite Quartz Talc Topaz 4. Post Part 1‚ Part 2‚ and Part 3 in this worksheet as an attachment to your Assignment Section. Delete the introductory instructions in this worksheet before
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Colorado Northwestern Community College Science of Biology Mrs. Farrow Lab 3 – Slime Time Submitted by Chase Kenemer 22 February 2015 Abstract Polar solvents dissolve‚ or pick-up‚ polar substances and non-polar solvents dissolve‚ or pick-up‚ non-polar substances. In the conducted experiment‚ the polarity of molecules and their properties are explored. The results of using two solvents on both polar and non-polar inks‚ further verify this to be true. The student conducted the experiment
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monoprotic acid has one proton that can undergo a reaction with a base‚ a diprotic acid has two such protons‚ and a triprotic acid has three. Shown below are examples of each type of acid undergoing a reaction with sodium hydroxide. Monoprotic: HCl(aq) + NaOH(aq) → H2O(l) + NaCl(aq) Diprotic: H2SO4(aq) + 2 NaOH(aq) → 2 H2O(l) + Na2SO4(aq) Triprotic: H3PO4(aq) + 3 NaOH(aq) → 3 H2O(l) + Na3PO4(aq) Any acid that has more than one proton that undergoes a reaction with a base is called a polyprotic
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2008/39 (56) References cited: EP-A2- 0 202 551 WO-A-01/04065 • DATABASE WPI Week 198232 Derwent Publications Ltd.‚ London‚ GB; AN 1982-67784E XP002450192 & SU 872 476 B (GRUZNIISTROM RES CO) 18 October 1981 (1981-10-18) (73) Proprietor: U.S. BORAX INC. Greenwood Village CO 80111 (US) (72) Inventors: • COOK‚ Simon‚ Gregson Guildford GU4 7QR (GB) EP 1 971 559 B1 Note: Within nine months of the publication of the mention of the grant of the European patent in the European Patent Bulletin
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INTRODUCTION HISTORY OF LAPTOP: A laptop computer‚ or simply laptop (also notebook computer or notebook)‚ is a small mobile computer‚ which usually weighs1-6 kilograms (2.2-12 pounds)‚ depending on size‚ materials and other factors. While the terms laptop and notebook are often used interchangeably‚ "laptop" is the older term‚ introduced in 1983 with the Gavilan SC. "Notebook computer" is a later coinage‚ which was used to differentiate smaller devices such as those of the NEC UltraLite and
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companies’ products do as well. Whenever meat was so spoiled that it couldn’t be used for anything else‚ they would rub it with soda to take away the smell and sell it to be eaten on free-lunch counters. They would also color the meat as well as put borax on it and tons of other chemistry methods just in order to sell it to consumers. All of this overwhelming stress takes a toll on the workers‚ which pushes them to resort to alcohol in order to numb the pain of being overworked. However this has a
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Dear US Congressmen‚ My family‚ my neighbors‚ my city of Chicago risk our lives daily by eating contaminated and tainted meat produced in our town‚ but we cannot do anything to prevent it without you‚ congressmen. If you vote for the Pure Food and Drug Act and the Meat Inspection Act to pass‚ millions of lives will be saved from something as little as headaches and nausea to something as fatal as dysentery or tuberculosis. In an inspection in the late 1890’s‚ Armour and Company distributed 750
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Crystals form in the depths of the Earth to the extension of the clouds in sky. Some think that crystals elude the sight of people’s eyes everyday in life‚ but they are everywhere including ingredients for food‚ construction materials‚ and even in ice-cold weather. The crystals in this experiment are ammonia-generated crystals that can be created right in a home. The experiment will be testing the different effects and products on crystals in different temperatures and forms of light. Different measurements
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