CHEMICAL REACTIONS: ACID-BASE BUFFERS Short Overview Acids and bases represent two of the most common classes of compounds. Many studies have been done on these compounds‚ and their reactions are very important. Perhaps the most important reaction is the one in which an acid and base are combined‚ resulting in the formation of water (in aqueous solution) and a salt; this reaction is called neutralization. A buffer solution is a solution that contains both an acid and a salt
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| | | | | | | | | The Erosion Process1. Water. Erosion from water typically occurs in the following ways. a. Raindrop Splash and Sheet Erosion. The first step in the erosion process begins as raindrops impact the soil surface. Raindrops typically fall with a velocity of 20-30 feet per second. The energy of these impacts are sufficient to displace soil particles as high as two feet vertically. In addition‚ the impact of a rainfall on a bare soil can compact the upper layer of
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especially topsoil‚ as a living entity. SOIL EROSION Soil erosion is when the soil is blown away by the wind or washed away by the rain. Soil erosion is common in areas with steep slopes‚ where trees have been cut down‚ in droughts when crops and other vegetation grow poorly and in rural areas which are overpopulated. Nepal‚ in the Himalayan Mountains‚ has severe problems caused by increased population density and steep slopes. Soil erosion can be reduced by building terraces on hillsides
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ConstruCtion microcontroller-based Ultrasonic distance meter and receiver)‚ current buffer ULN2003‚ operational amplifier LM324‚ inverter here are several ways to measCD4049‚ four 7-segment displays‚ five ure distance without contact. transistors and some discreet comOne way is to use ultrasonic ponents. The ultrasonic transmitterwaves at 40 kHz for distance measurereceiver pair is shown in Fig. 1. ment. Ultrasonic transducers measure Ultrasonic generators use piezothe amount of time
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ENERGY METER EEE PRESENTEC 2011 GUIDE: A.MARIMUTHU PREPARED BY: M. GOPALA KRISHNAN SELVA SUNDAR. R AKHIL LAL SURESH. S RAJA INFANT JESUS COLLEGE OF ENGG GUIDE HOD/EEE ABSTRACT The topic of this paper is energy meter. This paper deals with energy meter‚ its types‚ working principle‚ some advance meters‚ advantages‚ disadvantages application‚ conclusion. The condent of this paper is taken from electrical technology text book
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Dated: 12-04-2013 STEPS INVOLVED IN THE SELECTION FLOW METER There are well over 20 different types of flow meters‚ even if we lump the various positive-displacement flow meters together as one type. Unless the process engineer knows the pros and cons of each type‚ it can be a daunting task to properly select one. Here are just some of the factors to consider before selecting a flow meter: • Its size and measuring range of the flow meter • Chemical compatibility • Process accuracy requirements•
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weak monoprotic acids were determined with the aid of a buffer and pH meter. Experiment: This experiment was performed according to the procedures as provided in the Chemistry 111B laboratory manual: Po‚ Henry and Senozan‚ N. "General Chemistry Experiments Chemistry 111B"‚ 8th Ed.‚ 2004 Hayden-McNeil Publishing‚ pp 80-88. To determine the dissociation constants of weak monoprotic acids (HX and HY)‚ a buffer was needed to calibrate the pH meter. According to the manual‚ all four solutions to the experiments
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the buildings reduce the beaches ad many construction sites extract coastal sand for their projects. The coastal erosion that affects my hotel are both natural and anthropogenic. The slow rise of the sea level is gradual and takes time to happen‚ but this region is impacted by hurricanes and tropical storms which cause a severe costal erosion in short time. Many efforts to combat erosion‚ such as sand fill‚ are defeated by severe weather systems. As we have seen on all natural processes‚ there is balance
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MANAGEMENT REVIEW SHEET Coastal Erosion Subject Review The following reports and articles contain the information needed to complete this worksheet: “Evaluation of Erosion Hazards” prepared by the H. John Heinz III Center for Science‚ Economics and the Environment (summary report) http://www.heinzctr.org/NEW_WEB/PDF/erosnsum.pdf “Mapping Coastal Change Hazards” U.S.G.S. website beginning at http://coastal.er.usgs.gov/hurricanes/mappingchange/ “Coastal Erosion: Where’s the Beach?” Bridge Data
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CHARLES DARWIN UNIVERSITY ENG243 – THE VENTURI METER AND THE ENERGY LINE 1. Introduction A Venturi meter is a device for determining the flow-rate of a fluid down a pipe. One measures the pressure difference between the venturi inlet and neck‚ and from this the flow-rate can be determined. The apparatus used on this experiment also has a number of straight tube manometers at equally spaced intervals. These will be used to determine the hydraulic grade line of the fluid as it passes through
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