Vitamin C by Redox Titration with Iodine Vitamin C (ascorbic acid) is an antioxidant that is essential for human nutrition. Vitamin C deficiency can lead to a disease called scurvy‚ which is characterized by abnormalities in the bones and teeth. Many fruits and vegetables contain vitamin C‚ but cooking destroys the vitamin‚ so raw citrus fruits and their juices are the main source of ascorbic acid for most people. One way to determine the amount of vitamin C in food is to use a redox titration. The
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WHAT IS METAL? A metal is a chemical element that is a good conductor of both electricity and heat. Metals are malleable and ductile and have lustrous appearance. They have moderate to high physical constants and high tensile strength. Metals are further divided into two main groups - ferrous and non ferrous metals. TYPES OF METAL • FERROUS METAL These are metals which contain iron. They may have small amounts of other metals or other elements added‚ to give the required properties
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Thursday‚ February 5th‚ 2015 Andjela Stankovic Jesse Monney Milos Zubac Factors that Affect the Diameter of the Crater Produced by Dropping a Metal Ball Research Question What is the effect of increasing the dropping height of the metal ball on the diameter of the crater that is produced? Variables Independent Variable: the height in which the ball will be dropped at 5cm‚ 10cm‚ 15cm‚ 20cm. the height will be measured by a ruler (+/ 0
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“Started from the bottom now we’re here” wasn’t an understatement. Drake’s career has skyrocketed since the last few years. Drake’s childhood was made up of many disappointments. He suffered through his parents divorce‚ he was bullied in school‚ and his father left his mom and him for. Once Drake got older‚ his life started to come back together and it started getting better for him and his mom both. In order to truly appreciate and understand Drake you need to know his background‚ his personal life
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LET’S START WITH COPPER CHEMISTRY REPORT 2012 INTRODUCTION: The law of conservation of mass means that the atoms of an object cannot be created or destroyed‚ but can be moved around and be changed into different particles. This law says that when a chemical reaction makes two different atoms into a new product‚ the mass will be the same. Knowing this the mass of the copper should be the same at the beginning and at the end of the experiment. In this investigation we will see
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Experiment 1 : Redox Titration Using Sodium Thiosulphate Abstract This experiment is to determine the concentration of oxidizing solution using the iodine/ thiosulphate titration where the reducing solution is potassium iodate solution and the oxidizing solution is sodium thiosulphate solution. Potassium iodate solution which is an oxidizing agent is added into an excess solution of acidified potassium iodide. This reaction will release iodine. Potassium iodide is acidified with sulphuric acid
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locomotion that shipped many of the supplies that General Lee and his troops needed to Richmond‚ the ‘capital’ of the south‚ thus “General Ulysses S. Grant cut off all of Petersburg’s supply lines ensuring the fall of Richmond…” (National Park Service). The fall of Richmond was a critical and final blow to General Lee and the confederate army. General Ulysses S. Grant was upset with the Union army’s inability to capture Richmond‚ therefore he placed his sights on the next best thing‚ Petersburg. General
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TOPIC 2 Metals The History of Metals * Uses of metals through history: * Copper Age (3200-2300 BCE) – copper and tin were most common metals‚ and were used for ornaments‚ weapons and tools. * Bronze Age (2300-700 BCE) – copper‚ tin and bronze were used for tools‚ weapons and transport. They produced bronze by heating copper and tin with charcoal. * Iron Age (1000 BCE – 1 CE) – iron steel and lead was used for tools‚ weapons and pipes. Iron is much harder than bronze.
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A Sequence of Chemical Reactions: Transforming Copper Briefly describe. a) Why must you carry out the oxidation of Cu with HNO3 in a fume hood? Concentrated nitric acid is a toxic oxidant. Avoiding skin contact or inhalation is highly important. The reaction between Cu and HNO3 produces NO2‚ a toxic brown gas; therefore working under the fume is necessary in order to prevent inhaling the toxic gas. b) Why you should be particularly careful when you work with 3 M H2SO4 solution? Sulfuric acid
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The Battle of Britain Paige D. The Battle of Britain was an important battle in WWII‚ but did you know that it was ultimately a test of strength between the German Air Force and Britain’s RAF (Royal Air Force). The German Air Force was known as “Luftwaffe” pronounced [‘lဎftvafə] was commanded by Adolph Hitler. While Britain’s RAF (Royal Air Force) was commanded by England’s Prime minister‚ Winston Churchill. This battle was a major air campaign fought over southern England in the summer and autumn
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