Title: Acids‚ Bases & Buffers Objectives: 1. To understand the acid-base chemistry. 2. To prepare and evaluate a buffer system 3. To measure the buffering capacity of two types of isotonic drinks. Introduction: There are acid-forming‚ basic forming and neutral food‚ however the acid or alkaline properties of a food is unable to judge by the actual acidity of the food itself. For example‚ citrus fruits such as lemon are acidic‚ but they are alkaline-forming when we consume and digest it. Therefore
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strategies that you could use to help with your own success as well as the teams’. Knowing what pitches you have at your disposable will determine how your approach each batter differently. So you ask yourself‚ am I able to locate my fastball? Is my off-speed pitch effective enough to keep the hitter guessing at the speed? A pitcher must take notice to how the hitter sets up at the plate. Depending on the count (balls and strikes) will determine the type of pitch I must throw and the ones I shouldn’t
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Describe an important 21st century invention and explain how it has changed peoples lives. Day by day technology makes huge advances and makes enormous improvements which change our life continuously without us even noticing. Computers have now weaved in our everyday life and it’s something that we can’t do without‚ have you ever considered your daily life without using a computer? The very first step to this huge technological improvement was in 1837‚ when Charles Babbage designed the very
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Biological Bases of Behavior Nervous System Made up of neurons‚ which are the nerve cells. These send electrical impulses to one another ( through a process known as firing) telling the body what to do. The parts of a neuron include: Cell Body (a.k.a. soma) – Main part of neuron; contains basic cell parts such as nucleus‚ ER‚ etc.; also has dendrites extending from it. Dendrites – bushy fibers which extend from the soma; receives impulses and directs them towards soma Axon – an extension
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MARKET SEGMENTATION Bases for Segmentation in Consumer Markets Consumer markets can be segmented on the following customer characteristics. * Geographic * Demographic * Psychographic * Behavioralistic 1. Geographic Segmentation The following are some examples of geographic variables often used in segmentation. Region: by continent‚ country‚ state‚ or even neighborhood Size of metropolitan area: segmented according to size of population Population density: often classified as urban‚
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would experience an event that would almost cost me my life. While I was recovering nicely‚ not quite one week after my surgery‚ I had symptoms that my discharge instructions clearly indicated I should visit the emergency room because I could be in trouble. While I was in the emergency room‚ an unfortunate event happened that I believe led to the fight of my life. I will spare you those details‚ but it was extremely scary and traumatic. I remember the next morning that my abdominal muscles ached
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ACID/BASE You might need to know the following K values: CH3COOH Ka = 1.8 x 10–5 Benzoic Acid Ka = 6.5 x 10–5 HNO2 Ka = 4.5 x 10–4 NH3 Kb = 1.8 x 10–5 HF Ka = 7.2 x 10–4 H2S Ka = 5.7 x 10–8 HSO4– Ka = 1.2 x 10–2 HS– Ka = 1.2 x 10–13 HCOOH Ka = 1.8 x 10–4 HOCl Ka = 3.0 x 10–8 SIMPLE ACIDS AND BASES 1. According to the Brønsted–Lowry definition‚ which species can function both as an acid and as a base? (A) Cl– (B) SO42– (C) NH4+ (D) HCO3– (E) H3O+ 2. Which of the following
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Acids and Bases Shane Purpose- To study the relationship between pH and metabolism. 10/21/13 Materials- see attached Per. D Biology Procedure- see attached Data and Results- see attached Theory- PH stands for the power of hydrogen. People refer to the pH scale as a tool for finding out if a substance is acidic‚ basic‚ or neutral. This scale goes from zero to fourteen. The number seven is neutral. Any number higher than seven on this scale is basic. Any number lower is acidic
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The acid-base titration curves help to find the pKa‚ Ka‚ and pH at equivalent point. At the beginning pH for HCl is 1.90 which is lower than the 3.28 for acetic acid; thus‚ strong acid (HCl) means lower pH and weak acid (acetic acid) means higher pH. Then at the equivalent point for the titration HCl-NaOH the pH is 7‚ which mans that is neutral‚ in other words there are enough NaOH mmol to neutralize the HCl mmol present; also‚ the solution contains only water and NaCl the salt derived from the titration
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business‚ business sector‚ and business scale and business ownership. Tesco was founded in 1919 by Jack Cohen from a market stall in East London. Over the years Tesco’s has grown and they now operate in 12 countries around the world‚ employ over 530‚000 people and serve tens of millions of customers every week. What is the purpose of the business? The main purpose Tesco serves is supplying wide varieties of goods which it sells‚ both in store and online. It also offers financial services such as its
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