Determination of Calcium Carbonate in Eggshells – Background The major component of eggshells is calcium carbonate‚ CaCO3(s). This analysis is done volumetrically by using a characteristic reaction of carbonate compounds‚ namely their reaction with acids. Calcium carbonate (limestone) is very insoluble in pure water but readily reacts in acid according to the reaction below. 2HCl(aq) + CaCO3(s) → CaCl2(aq) + CO2(g) + H2O(l) + HCl(aq) (in excess) (limiting reagent) (1) (unreacted)
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Kuwait Petroleum Corporation (KPC)‚ announced a multi-billion dollar joint venture with the Dow Chemical Company (Dow) in December 2007‚ in which Dow would contribute its Oil and Gas arm totally into the deal‚ creating the largest Polyethylene provider in the world. Polyethylene is the main ingredient in plastics. K-Dow would be larger than the JV between GE Plastic and SABEC and Chevron Phillips. The venture would employ more than 5000 people (Kuwaitis and non-Kuwaitis) and have annual revenue of
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Rectangular Microstrip 6X6 Patch Array Antenna Performance Evaluation based on Permittivity of the Substrate Materials 1 P.Sreyash‚ 1A.Snehitha‚ 1V.Satya Sainadh‚ 1P.L.Madhuri‚ 1Saroj Gautam‚ 2 Mr.B.T.P.Madhav‚ 2Mr.Pranob Kumar Charles‚ 3Dr.Habibullah Khan Department of ECE‚ K L University‚ AP‚ India. : sreyash306@yahoo.com‚ Snehitharao@yahoo.com 1 Project Students‚ 2Asst. Professor‚ 3Assoc. Professor‚ 4Head of the Department Abstract: In the recent years‚ the development in communication systems
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are enormous. Plastic bags are difficult to produce‚ nearly impossible to get rid of once produced‚ and harmful to wildlife. To begin with‚ plastic bags are difficult to produce. The most common plastic bags we see today are made from polyethylene. Polyethylene is made from crude oil and natural gas. A 2011 news report conducted by the National Conference of State Legislatures found that it requires about 12 million barrels of oil to make 380 billions of plastic bags. According to Doucette Kitt
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products. Identify that ethylene‚ because of the high reactivity of its double bond‚ is readily transformed into many useful products Ethylene‚ because of the high reactivity of its double bond‚ can form many useful products‚ such as plastics (polyethylene). For example‚ ethene can react with water to form ethanol‚ with a H3PO4 catalyst at 300oC. Ethene can react with oxygen in the presence of an Ag catalyst and at 250oC‚ to form ethylene oxide‚ which is further treated with dilute acid solution
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joints; the latter two are ball and socket type joints [more information on ball and socket joints is provided in 9.3 Medical Technology - Bionics‚ subsection 3]. * Artificial hip joints are often made from a stainless steel-polyethylene or cobalt-chromium alloy-polyethylene combination. Other materials that can be used are: * titanium * titanium-aluminium-vanadium
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ONION PRODUCTION IN A GREENHOUSE GREENHOUSE TECHNOLOGY Greenhouse is a structure that allows controls of certain environmental parameters for purposes of providing optimum conditions for the growth of a targeted crop. The greenhouse production is a highly specialized and intensive form of agriculture as Compared to field crop agriculture. The greenhouse production is more suited to vegetables‚ flowers; fruit a can also be used as a nursery for all vegetable crops‚ because of their short life-span
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the penetration of small molecular gas (such as O2‚ CO2‚ N2‚ water vapor)‚ aroma and other organic solvent vapor prominently. By virtue of better barrier performance‚ polyvinylidene chloride (PVDC)‚ ethylene / vinyl alcohol copolymer (EVOH) and polyethylene naphthalate (PEN) are mainly used to produce thin films and containers‚ and utilized in such fields with higher requirements on barrier properties as food‚ medicine‚ military products‚ cosmetics‚ pesticides‚ precision instruments and high-grade
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on the bottom of the plastic container. The two most recyclable categories are: Marked “1” This category contains PET or PETE (Polyethylene Terephthalate) plastics. These plastics include: Soda and water bottles Mouthwash bottles Plastic wrap Peanut butter and other food jars Salad dressing bottles Marked “2” This category contains HDPE (high-density polyethylene) plastics. These plastics include: Milk containers Trash bags Yogurt containers Liquid laundry detergent containers Shampoo
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1 Experiment 15: Exploring the World of Polymers Objective: In this experiment‚ you will explore a class of chemical compounds known as polymers. You will synthesize and modify polymers‚ test their properties and use a fabrication technique to produce an object from a polymer. Introduction (See Tro‚ pp 985-987.) The importance of both natural and synthetic polymers in our lives cannot be overestimated. The desirable properties of these macromolecules‚ such as tensile strength and flexibility
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