E20-1 Experiment 20 Consumer Chemistry: Vitamin C in Fruit Juices The Task The goal of this experiment is to determine the concentration of vitamin C in a range of different fruit juices (fresh and preserved) using titration and to rank these sources of vitamin C. Skills At the end of the laboratory session you should be able to: * use a pipette correctly‚ * use a pipette filler safely‚ * manipulate a burette and carry out a quantitative titration properly‚ * weigh a sample
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The C programming language (often‚ just "C") is a general-purpose‚ procedural‚ imperative computer programming language developed in the early 1970s by Dennis Ritchie for use on the Unix operating system. It has since spread to many other operating systems‚ and is now one of the most widely used programming languages. C also has had a great influence on many other popular languages‚[1] especially [[C++]] which was originally designed as an enhancement to C. It is the most commonly used programming
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Research Question: How the amount of vitamin C in fruit juices affects its freshness and till what extent is the information provided on the pack by manufacturers is reliable? Background Information: Hypothesis: -fresh juices have more vitamin C than long-life -juice that is ‘not from concentrate’ is best in terms of vitamin content -if heat destroys vitamin C then heat-treated long-life juices will have lower concentrations -if heat destroys vitamin C then boiled fruit juice will have lower
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88‚ d = 11. (b) a = −29‚ d = 9 (c) a = 58237‚ d = 58168 (actual question is a = 58237‚ d = 58168 ) Solution: (a) Because 88 = 11・8 + 0‚ we have q = 8‚ r = 0. (The fact that r = 0 says that 11|88.) (b) Because −29 = 9・(−4) + 7‚ we have q = −4 and r = 7. (Note that although we can write −29 =9・(−3) + (−2)‚ we cannot use −2 as r because r is not allowed to be negative.) (c) a = d(q)+r 58237 = 58168(1) + 69 Quotient = 1‚ Remainder = 69 (c actual) We do not need to perform
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percentage of vitamin C (ascorbic acid ) between the fresh orange juice and artificial orange juice (Sunkist). Problem statement : Does have different types of fruit juice contain similar amount of vitamin c ? Objevtive: To analyse the concentration and percentage of different food sample by using titration method and state whether the percentage and concentration of vitamin C. Methodology: Theory : DCPIP can also be used as an indicator for Vitamin C. If vitamin C‚ which is a good reducing
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Getting Set Up - C++ Compilers The very first thing you need to do‚ before starting out in C++‚ is to make sure that you have a compiler. What is a compiler‚ you ask? A compiler turns the program that you write into an executable that your computer can actually understand and run. If you’re taking a course‚ you probably have one provided through your school. If you’re starting out on your own‚ your best bet is to use Code::Blocks with MinGW. If you’re on Linux‚ you can use g++‚ and if you’re on
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University of Phoenix Material Appendix C Models of Abnormality Psychologists use several different models to explain abnormal behavior. These different models have created shifts in values and beliefs as well as improvements in clinical research. These differences in ideas mean that the different models are sometimes in conflict with one another. People who follow one model often point out where another model fails in its interpretations‚ investigations‚ and treatment methods. Read the brief
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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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Section C (Edexcel IGCSE in English Language A) May 2010 Imagine that your school or college has been awarded a large sum of money to spend on improving facilities‚ and on increasing opportunities‚ for students. Write the text of a speech you might give to the Student Council‚ outlining your ideas on how the money should be spent. November 2009 “Schools are stuck in the past. They don’t adequately prepare young people for real life in the modern world.” Write about what you think schools
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poor growth placed the twins in danger‚ but she refused the surgery until too late‚ reportedly on cosmetic grounds—she is alleged not to have wanted the resulting vertical scar. * In 1987‚ Angela Carter‚ who was dying of cancer‚ also refused a C-section. She sought to remain pregnant until the 28th week of pregnancy‚ the point at which doctors had once told her her baby would have the best chance to survive. At 26 weeks‚ however‚ physicians felt that the child had a 50% chance of surviving
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