CHEMISTRY 221 LABORATORY�QUANTITATIVE ANALYSIS EXPERIMENT: DETERMINATION OF ASCORBIC ACID IN VITAMIN C TABLETS THEORY: Ascorbic acid‚ C6H8O6‚ MM = 176.13‚ can be oxidized to form dehydroascorbic acid by bromine via the following reaction: The bromine or iodine used in the titration is generated by adding an excess amount of KBr or KI to an acidified solution of the sample according to the following reaction: BrO3- + 5 Br- + 6 H+ 3 Br2 + 3 H2O IO3- + 5 I- + 6 H+
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Estimating the Vitamin C Concentration in Fruit Juices: A Redox Titration Prelab Assignment – Please turn your answers in on GaView prior to lab 1. How will you prepare a .02% (m/v) NBS solution? Calculations should be in your notebook before arriving to lab. 2. Provide the structure of vitamin C in its reduced form (ascorbic acid)‚ its ionized form (ascorbate ion- this is at equilibrium with reduced form when dissolved)‚ and its oxidized form (dehydroascorbate). 3. Why do you
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Task C 026 A) There are many different sings‚ symptoms‚ indicators and behaviours that may cause concern of a child in you care‚ some signs may be Unexplained bruising or burns that keep recurring Wearing heavy clothing even in hot weather Bald patches of hair Running away from home‚ many times Fear of medical examination Aggression towards self (self-harming) and others Fear of physical contact Some signs you may notice with neglect could be that the child is always tired or hungry
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audience‚ purpose and the link or relevance to the context (FLAP+C) You will also explain the relationship between your writing and the selected text‚ that is; how you have drawn on the text to inform your writing about the Context. You will use metalanguage to explain the decisions you have made about specific structures and features‚ and how language choices of authors you have studied have influenced these decisions. Understanding FLAP + C You can usually discuss your chosen form‚ purpose & audience
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Hepatitis C has been referred to as a "Silent Epidemic‚" since it usually progresses slowly over many years. Most people who are infected with hepatitis C are not aware of any noticeable symptoms for as long as one to two decades after they are infected. In fact‚ by the time symptoms appear‚ the virus has probably already begun to damage the liver. If the liver is injured and stops functioning‚ death will always be the outcome (Lieber). Liver failure from chronic hepatitis C is one of the most common
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Short-circuiting logical operators && and || OR (||) expressions – if the first evaluates as true‚ no need to evaluate the second operand AND (&&) expressions – if the first evaluates as false‚ no need to evaluate second operand C# also includes the & and | operators logical does not perform short-circuit evaluation NESTED-IF ELSE STATEMENT * Acceptable to write an if within an if * When block is completed‚ all remaining conditional expressions are skipped or bypassed *
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Programme‚ reference HE 06 KEP 1002 What is OCR technology? OCR technology allows the conversion of scanned images of printed text or symbols (such as a page from a book) into text or information that can be understood or edited using a computer program. The most familiar example is the ability to scan a paper document into a computer where it can then be edited in popular word processors such as Microsoft Word. However‚ there are many other uses for OCR technology‚ including as a component of
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An adult hermaphrodite of C. elegans has the lesser amount of internal tissues and organs with unsegmented‚ bilaterally symmetrical‚ a cylinder-shaped body that is pointed at the ends. It has an outer covering (i.e.‚ body wall made up of cuticle‚ hypodermis‚ neurons‚ muscles and excretory and an inner tube contains the pharynx‚ intestine. An outer tube and an inner tube is partitioned by pseudocoelomic space and also the tissues controlled by an osmoregulatory system. In C.elegans head‚ the pharynx
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for this is as follows: operator typename(){….} The above function shall convert a class type data to typename. A conversion function must follow the following 3 rules: a. It cannot have a return type b. It has to be declared inside a class. c. It cannot have any arguments. (ii)File pointers: we need to have file pointers viz. input pointer and output pointer. File pointers are required in order to navigate through the file while reading or writing. There are certain default actions of
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Abstract By understanding how components within certain cells confer their ability to regenerate or antagonize cellular differentiation into specific cell types‚ we can change these components to make our cells have regenerative properties. To understand this‚ we examine cells of the germline‚ called germ cells. These "parent" cells of sperm and egg cells have the ability to become any cell type of each subsequent generation‚ and are thereby totipotent. This totipotency essentially makes germ cells
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