ACID / BASE BUFFER SYSTEMS Abstract A buffer solution is a solution that contains both an acid and a salt containing the conjugate base / acid in sufficient concentrations so as to maintain a relatively constant pH when either acid or base is added. In this experiment a selection of buffer solutions (Bicarbonate/carbonic acid)‚ Lake water and distilled water were obtained to compare their buffering behaviours when mixed both with an acid and a base. The results showed buffering capacities for
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The concentric zone model was among the early descriptions of urban form or Cities. Originated by Earnest Burgess in the 1920’s‚the concentric zone model depicts the use of Urban land as a set of concentric rings with each ring devoted to a different land use. The model was based on Burgess Observation of Chicago during the early years of the 20th Century. Major routes of transportation emanated from the city core‚ thus making the central business district the most accessible location in the city
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Preparation of buffer solutions 1. Activation buffer (Mixed Phosphate Buffer‚ pH 5.5) Solution 1: An accurately weighed quantity of 1.61 g of potassium dihydrogen phosphate was dissolved in sufficient deionized water to produce 100 mL of solution. Solution 2: An accurately weighed quantity of 35.81 g of disodium hydrogen phosphate was dissolved in sufficient volume of deionized water to produce 100 mL. Accurately measured volume of 96.4 mL of solution 1 was mixed with 3.6 mL of solution 2 to get
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Buffer Overflow Subscribe Hide Description Explain what buffer overflow attacks are and how they are created to attack our software. And‚ describe the best security measures you would recommend mitigate these buffer overflow attacks. Buffer overflow attacks occurs when hackers sending a large amount of data than the buffer was intended to hold‚ this large amount data immediately overwrite and corrupt other data in the buffer. Data contain codes to trigger specific actions that controls the program
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NOTES: The word is divided into 6 climate zones. These zones depend on several factors. The first is temperature; if a country lies near the equator it tends to be hot; but if it’s near the poles it tends to be colder. A country can also have a cold climate if it’s very mountainous with most of its land sitting well above sea level. Wind direction can also influence climate. If winds are being blow from a hot area they will raise temperatures‚ the opposite is also true. If winds have been blown
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1. There are a number of characters in this book‚ choose one and tell us why you would want to be that person. Throughout this book we are introduced to many interesting and riveting characters but in my opinion one of the best characters in this book would have to be Major Nancy Jaax. She was a veterinarian in the Army‚ and her work at Fort Detrick in Maryland often took her away from her children. Consequently‚ she often made up batches of meals in advance so they could easily be thawed and reheated
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A. Concentric Zone Theory The Concentric ring model also known as the Burgess model is one of the earliest theoretical models to explain urban social structures. It was created by sociologist Ernest Burgess in 1925. Zone I‚ the CBD‚ lies at the centre of the city. Zone II is in transition. It is the crowded‚ multi-occupied zone of the city first invaded by migrants. Within this Zone are the ghetto areas (these are not necessarily slums). In Zone III are the working men’s houses‚ the area
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The Intertidal Zone The intertidal zone is the area of the sea floor that is uncovered and recovered by the tides. At high tide‚ the intertidal zone is submerged beneath sea water and at low tide it is exposed to air. There are two main types of intertidal zones that experience this daily change‚ the sandy shore and the rocky shore. Each has different characteristics and special organisms that survive there. These different species tend to inhabit different zones in which they can handle but there
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Time Zones Christopher D. Smith GLG/150 July 21‚ 2010 The Greenwich Meridian is a north-south line representing a zero degree-reference line in longitude. The line passes through the United Kingdom and it represents the world’s prime meridian. Longitude is used to measure the distance of areas on the world east‚ or west. Think of it like the equator‚ where the equator separates the southern and northern hemispheres. The Greenwich Meridian separates the east and west hemispheres. According
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The Blue Zones The Blue Zones: Lessons for Living Longer From the People Who’ve Lived the Longest by Dan Buettner talks about the author’s research in different places who have people who live into very long years of their life in a few areas of the world who claim to have the highest number of the oldest people. Blue Zone is a concept used to identify a demographic and/or geographic area of the world where people live measurably longer lives‚ as Dan Buettner describes in his book. The concept had
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