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+ 3 I2
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Investigation 3 Determine the Limiting Reagent Chemistry Investigation 3 Limiting Reagents Aim: To determine the limiting reagent in a reaction. Hypothesis: if the number of moles of the solutions added together equals the stoichiometry ratio in the balanced equation‚ then we would not expect a limiting reagent in the reaction. Independent variable: The number of moles of the reactants Dependent Variable: The limiting reagent Constant Variable: The volume of reactants added Equipment:
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the problem and the business solution. NOTE: Parts of this project are due at the end or several modules beginning with getting to know your group in Module 2. Be sure to plan your work accordingly. The project should minimally contain the following sections: Business and Market Overview - your client’s organization‚ management‚ business model‚ their products and services‚ and their growth strategy. Elaborate on the distinct external pressures on their business. This section must include
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mass audience. The reporting and investigation of news falls within the profession of journalism. News is often reported by a variety of sources‚ such as newspapers‚ television‚ and radio programs‚ wire services‚ and web sites. News reporting is a type of journalism‚ typically written or broadcast in news style. Most news is investigated and presented by journalists and can be distributed to various outlets via news agencies. There are many categories of news. The weather is typically presented
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Startup Venture Transaction Analysis – Ybrain Generally I think it’s a good decision for Stonebridge Capital to invest in the Ybrain. My investment analysis mainly involves five parts: Market‚ Team‚ Product‚ Business Model‚ and Exit Options. First of all‚ I will look at the industry dynamics and market potential. Ybrain is a combined product of the medical device industry and the wearable tech industry‚ both of which are the emerging growth areas. Compared to the wearable products for general
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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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Hepatitis C is a liver disease that is caused by hepatitis C virus. The virus enters into the liver cell‚ use the cell’s genetic to make copies of itself which then affects more cells. Causes Hepatitis C is usually transmitted through blood to blood contacts. It can be transmitted by sharing needles when injecting‚ toothbrushes and razors‚ tattoo or body piercing with equipment that has not been properly sterilized. It can also be sexually transmitted. It is not passed on by everyday contact
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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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-:LINE FOLLOWING ROBOT:- One of the most basic autonomous robot you can build is a line following robot(LFR). This type of robot is run over a white surface which has an arbitrary path drawn over it by using back paint. The task of the robot is to run exactly along this painted path. You may note that the surface may also be black(or any other dark colour)‚ in that case the path is a light colour like white. Please watch the following video for a LFR in action. Designing an LFR: At minimum our
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Classes A class is a construct that enables you to create your own custom types by grouping together variables of other types‚ methods and events. A class is like a blueprint. It defines the data and behaviour of a type. If the class is not declared as static‚ client code can use it by creating objects or instances which are assigned to a variable. The variable remains in memory until all references to it go out of scope. At that time‚ the CLR marks it as eligible for garbage collection. If the
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