BRONSTED-LOWRY ACIDS AND BASES 1. The Bronsted-Lowry definition There are many definitions of acids and bases in existence‚ but the most useful one is the Bronsted-Lowry definition: An acid is a substance which can behave as a proton (re presented as a hydrogen ion‚ H+) donor. Any substance which contains hydrogen bonded to a more electronegative element can thus behave as an acid: HCl == H+ + Cl- H2SO4 == H+ + HSO4- A base is a substance which can behave as a proton acceptor. Any
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Lagging and Leading Strand Synthesis The synthesis of a new strand of a replicating DNA molecule as a series of short fragments that are subsequently joined together. Only one of the new strands‚ the so-called lagging strand‚ is synthesized in this way. The other strand (leading strand) is synthesized by continuous addition of nucleotides to the growing end‚ i.e. continuous replication. The difference arises because of the different orientations of the parent template strands. The template of the
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LAB 6. ACIDS AND BASES: PH AND BUFFERS PURPOSE: To determine the pH of common acids and bases using a pH meter‚ pH paper‚ and red cabbage indicator. To test the effect of adding an acid or base to a buffer solution. SAFETY CONCERNS: Always wear safety goggles. Wash with soap and water if skin contacts acids or bases. ACIDS: An Acid is a substance that when dissolved in water will produce hydrogen ions‚ H+‚ in the solution. An acid that does not contain carbon is called an inorganic
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BACKGROUND INFORMATION HOW DOES ONE DIFFERENTIATE THEM? There are several ways to classify substances. One way is based on their pH. Substances may be * Acid 2. Base 3. Neutral INDICATORS This is a substance which is one color in and acid and another color in a base. Indicators can ten be used to test for the presence of acids or bases in a substance. Some are available in paper form (litmus) and others in liquid form (methyl orange)
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the biggest thing was short skirts and skinny jeans. Then from the 2000s on our fashion has not really changed. I will say one thing though‚
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the Different Relational Database Management Systems In an article written By Suqing Wang‚ eHow Contributor SQL Server Vs. Oracle Data Types Database While designing and defining tables in databases‚ it is important to find out the data type for each column in the data tables. A data type is an attribute which defines the type of data an object can retain: integer‚ string‚ data and time‚ etc. There are basically three main types: text‚ numbers and date/times. The data types are different‚ depending
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Suggested time allotment: 5 to 6 hours MODULE 2 ACIDS AND BASES In Module 1‚ you identified common properties of solutions using different methods. You learned how to report the amount of the components in a given volume of solution. You also found out that not all solutions are liquid. Some of them are solids and others are gases. Towards the end of the module‚ you investigated the factors that affect how fast a solid dissolves in water. Most of the solutions you studied in Module 1
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The theme of the book Strands of Bronze and Gold‚ by Jane Nickerson‚ is that it is important not to just rush into a romantic relationship because people can change and be deceptive. In the book‚ Anne‚ a kind and gentle girl‚ wanted her sister Sophia to come home with them to keep her safe from Bernard‚ Sophia’s cruel godfather‚ who she is about to marry. However‚ by doing that‚ their family might be in big trouble since they don’t have any money and Bernard was going to give them some. Anne said
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determined by colorimetric titration‚ and the identity of an unknown acid was determined by potentiometric titration. In the first titration‚ a strong acid standard‚ potassium hydrogen phthalate (KHP)‚ was used‚ to determine the concentration of a strong base‚ sodium hydroxide (NaOH). In order to do so‚ we prepared NaOH solution‚ prepared a buret‚ and standardized this solution by performing a colorimetric titration of the KHP with the solution until a color change was present. The color change was introduced
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The department comprises 3 main strands of support for students – those with specific learning difficulties‚ those with medical‚ mental health difficulties and sensory and physical impairments and study skills support for all students. The department is managed by the Head of Study Support who has overall operational responsibility with study skills provision managed by the Inclusive Learning Co-ordinator. The work of the department has significantly broadened over recent years to meet the needs
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