two students required: * vitamin C indicator solution * three 50 mL beakers or medicine cups * one 10 mL graduated cylinder * three disposable pipettes * one stirring rod * Sources of Vitamin C: freshly squeezed OJ‚ bottled OJ‚ frozen OJ‚ canned OJ * Optional: container for waste solutions and source of clean rinse water There are two different preparations (starch-iodine or indophenol) that may be used for the vitamin C indicator solution. Neither is more accurate
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History of the Roman Empire The History of the Roman Empire covers extensive happenings that occurred from the fall of the Roman Empire to the emergence of the last Roman emperor. The founding of the republic in 6th century formed the core of an uprising which led to the formation of an empire. The Roman Empire emerged after the emergence of powerful dynasties such as Julio. By 285 CE‚ the expansion of the Roman Empire had made it impossible to rule from a central area hence it was divided into
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Cytochrome-C Comparison Brief Description: The molecular clock refers to mutations in DNA nucleotide sequence of genes occurring at a constant rate over time. The greater the difference in nucleotide sequence between two individuals of different species‚ the greater the amount of time has passed since they diverged from a common ancestor. The molecular clock helps to provide evidence to support conclusions previously based on comparative morphology and fossil records. Hypothesis: One hypothesis
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the end of this lesson you will be able to: Describe the main types of marketing research. Explain how marketing planning helps organisations to set marketing objectives. Learn the requirements of formative task 2 sections A and B (presentation)‚ C and D (essay). What is marketing research? The purpose of marketing research is to help organisations make effective decisions by providing information on consumers‚ competitors and the market. Different types of research Primary research: new
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The Fall of the Roman Empire The Ancient Roman empire was one of the most prominent and successful societies of its time period. By the end of their reign‚ the Romans had conquered almost all of the Mediterranean including parts of present day Europe‚ Asia‚ and Africa. Rome was at its strongest during the rule of Augustus Caesar‚ this time was known as the “Pax Romana” or Roman peace. It wasn’t until later‚ when Emperor Trajan took over in about 98 C.E. that the Empire reached its peak. After
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Political Changes and Continuities in China Through 600 CE Up until the 7th century CE‚ Chinese politics mainly remained the same after the Han dynasty. The major differences had to do with the way that the people were governed and how much influence religion had over the government. Before the Han‚ there was the Zhou and Qin dynasties‚ the Zhou was the first to implement the basis of any widespread government‚ and it is also the first example of continuity during the classical period in China
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IB Biology Lab – Vitamin C content of food Aim: To compare the vitamin C content of different fruits using the decolourisation of DCPIP from blue to clear as the indicator. • You first need to estimate the volume of a known concentration of vitamin C solution required to decolourise 2 cm3 of DCPIP solution. • Then you need to determine the volume of fruit juice that decolourises 2 cm3 of DCPIP solution. This gives an estimate of the concentration of vitamin C in fruit juice. • This
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Browsing through your e-Catalogue You can develop your catalogue to be browsed online manyfold‚ such as: (1) browsing by categories‚ just as they are stored in the back-end catalogue; (2) browsing by filters: via a dashboard‚ to be graphically designed ad-hoc‚ through which the user selects the product features that filter a subset of products‚ independently of the categories they belong to; (3) browsing by wizard‚ to be graphically designed ad-hoc‚ through which the user is guided
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Determination of Vitamin C by an Iodometric Titration Purpose: The goal of this lab is to determine the concentration of vitamin C in juices and Real Lemon. A redox titration‚ involving an iodometric method‚ will be used to do the analysis. The samples will be classified by their Vitamin C content. Introduction: Although most mammals can synthesize vitamin C‚ or ascorbic acid (C6H8O6)‚ from sugars‚ man must ingest considerable quantities of this substance. The National Academy of Sciences recommends
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From the beginning of time‚ the prominent religion of the Roman empire was polytheistic. Romans believed that there were many Gods and that their society was protected by an arranged agreement with the Gods in exchange for worship and sacrifice. Hence‚ religion was not so much to do with spirituality rather a‚ “contractual relationship between mankind and the forces which were believed to control people’s existence and well-being”(1) ‚that is‚ the emperor’s. Christians(believers of Jesus and his
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