Water is a natural resource in the Earth.Water is essential to our life also‚ such as water can solve our thristy problem‚ water can make us survive‚ water can clean our body‚ water can recharges our fatigue‚ and water can revitalise our skin.According to scientist investigation‚ 70% of our body mass are water.Therefore‚ water is very important to us. Although water is essential to our life‚ we will lose water everyday also.How we lose our water? We can lose water through perspiration‚ respiration
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Aluminum Production What is aluminum? Aluminum is an abundant metallic chemical element which is widely used throughout the world for a wide range of products. The Element Aluminum Atomic Number: 13 Melting Point: 660.323°C Boiling Point: 2519°C Density: 2.70 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 3 Group Number: 13 Group Name: none What is aluminum used for? • Transportation: In addition
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time is recorded and the height. * Diffusion in solids -4 agar plates -KMnO4 crystals -methyl orange -refrigeration -ruler The experiment requires 4 plates of agar due to his transparency and the colloid that forms when mixed with water. One pair of plates is labeled 4^0 C and the second pair RT (room temperature). After taking the lids of the first pair ‚using a tooth pick‚ a small crystal of potassium permanganate is placed in the center of the of the agar and the same amount of
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Aluminum is traded in competitive markets. Up to 1994‚ there were a handful of major firms that dominated the primary aluminum production. During 1980s‚ the top five private producers held more than one-third but less than one-half of the world’s production. However‚ by 1994‚ their share of the market dropped to one-third of the world’s production. Assume that no smelter has exited or entered the market since 1994 till 2010. Therefore current smelter is either still operating or idle. Also‚ technologies
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The Chemistry of Natural Waters | Chem 111 Sec 104 | | Hyunjung Hwang | 11/6/2012 | TA: Sarah Boehm‚ Group members: Rachel Hoffman‚ Dan Hirt | Introduction Water hardness is a major part of overall water quality that affects many industrial and domestic water users. Water is considered hard when there are high concentrations of the divalent cations Magnesium and Calcium; water hardness is considered as the sum of both the calcium and magnesium concentrations and expressed as calcium
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Title: Determination of Iron in Natural water by Spectrophotometry. Aim: To determine the iron in natural water by spectrophotometry. Abstract: The iron in natural water was determined by utilizing spectrophotometric analysis. That was done by measuring the absorbance of five Fe(oPH)2+3 standards at 510 nm. From that information‚ a calibration curve was plotted and used to find the amount of Fe2+ that was in two unknown water samples based on the absorbance readings obtained with them at 510nm. The
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Environmental Chemistry: Determining the Phosphate Level of Water Objective: -To understand the effects of phosphates from fertilizers into water supplies. -How to use a spectrophotometer and understand how it works. -Understand the correlation and usage of Beer’s law with calibration curves. Introduction/Procedure: Environmental protection has been a growing concern for many people in the recent years. With talks of global warming‚ deforestation‚ and rising ocean acidity in the news it is safe
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Aluminum Formwork CEM 426 Professor D. O’Mahoney Ahmed Hilal Aluminum formwork is a rapid pace construction system for forming cast in place concrete structures. Formwork the term given to either temporary or permanent molds into which concrete or similar materials are poured. In the context of concrete construction‚ the “falsework” supports the shuttering molds. This formwork is built out of prefabricated modules with a metal frame (usually steel or
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RECYCLING ALUMINUM PURPOSE To determine the mass of a hydrated aluminum potassium sulfate salt in a sample of impure scrap aluminum from a common beverage can. The sample will be passed through a filter paper using a funnel‚ after being boiled on a hot plate in a fume hood and dissolved in a solution of potassium hydroxide to remove the impurities. By adding an excess of sulfuric acid and cooling the solution in an ice bath‚ the technique of vacuum filtration using a Buchner funnel will be employed
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Pre-IB Science Research Paper Wood vs. Aluminum The decades old debate over aluminum vs. wood bats will probably exist as long as the choice is available. Baseball was played with wooden bats for a great number of years. In fact‚ even with the advancements in aluminum bats‚ it’s the professionals who use wood bats and the amateurs who use the all-mighty aluminum bats. So‚ the question is which is better‚ wood or aluminum? Aluminum bats are used in most Little Leagues because they are lighter
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