Commercial Cells Galvanic Cell A Galvanic cell is also known as a Voltaic cell. It was named after Luigi Galvani and Alessandro Volta. A galvanic cell is capable of producing an electric current from a redox reaction that occurs within it and consists of two half cells. Each half cell consists of an electrode and electrolyte and a salt bridge. In a galvanic cell one metal can undergo reduction and the other oxidation. A typical galvanic cell is based on the spontaneous redox reaction: Net Ionic
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2013 Inductively Coupled Plasma – Atomic Emission Spectroscopy Aim The aim of this practical was to use an ICP-OES to perform a multi-elemental analysis of different types of tea. The elements that were analysed in the tea were copper‚ iron‚ manganese and magnesium. The sample is introduced into the plasma as an aerosol. Argon gas flows through three concentric quartz tubes in the plasma torch. This argon gas transports the sample from the nebulizer‚ acts as a cooling gas and is also a source
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Aluminum reduces the oxide of another metal. For example‚ when using iron oxide (as I did) the equation would be Fe2O3(s) + 2 Al(s) -> Al2O3(s) + 2 Fe(l). Black or blue iron oxide (Fe3O4) could also be used. Other examples of possible oxides are manganese thermite (MnO2)‚ Cr2O3‚ and copper thermite (CuO). Aluminum can also be replaced by any reactive metal. Aluminum‚ however‚ is the safest material and the cheapest to use. Thermite‚ if you look at the equation‚ supplies it own oxygen‚ which means
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Title of the Study Book‚ Website that is related to you | Health Benefits(Sweet Potatoes vs. Rice) | Which is the most effective for brain (Sweet Potatoes or Rice) | What is your Understanding? | RiceRice is the most popular Needs of Humans. It is the great source of complex carbohydrates‚ calories and proteins whether it is white or brown rice( just the same nutrients)But when in it comes in good source of vitamins like Vitamins B1 (thiamine)‚ Vitamin B2 (Riboflavin) ‚Vitamin B3 (Niacin)‚ iron
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Introduction A melon is any of various plants of the family Cucurbitaceae with edible‚ fleshy fruit. The word "melon" can refer to either the plant or specifically to the fruit. Many different cultivars have been produced‚ particularly of muskmelons. Although the melon is a botanical fruit (specifically‚ a berry)‚ some varieties may be considered vegetables rather than fruits. The word melon derives from Latin melopepo‚ which is the latinization of the Greek μηλοπέπων (mēlopepon)‚ meaning "melon"
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Evaluation Like any experiment‚ there were a number of potential errors during the procedure of the experiment. Errors could have arisen as a result of the uncertainties associated with the instruments I used to take measurements‚ and also as a result of errors associated with the actual method. Of course‚ due to the limitations of the procedure‚ they could not be eliminated completely‚ so I will explain what I did to reduce them to an acceptable level and how I could have improved my method to
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HKDSE CHEMISTRY – A Modern View (Chemistry) Experiment Workbook 5 Suggested answers Chapter 52 Importance of industrial processes Chapter 53 Rate equation Experiment 53.1 Determining the rate equation of a reaction using method of initial rate (A microscale experiment) 1 Chapter 54 Activation energy Experiment 54.1 Determining the activation energy of a chemical reaction 3 Chapter 55 Catalysis and industrial processes Experiment 55.1 Investigating the action of a catalyst 6 Experiment
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NUTRIENTS IN BANANA PEELS Banana peels are also rich sources of potassium and contain much more soluble and insoluble fiber than their flesh. Dietary fiber promotes digestion and bowel movements and can reduce blood cholesterol levels. Banana peels also contain tryptophan‚ which increases serotonin levels in the body and affects mood‚ much like the drug Prozac does. According to "Prescription for Nutritional Healing‚" researchers in Taiwan discovered banana peel extract can ease depression because
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titrant in the analysis of an unknown sample containing iron to determine the percent iron by mass in the sample. In acidic solution‚ potassium permanganate rapidly and quantitively oxidizes iron(II) to iron (III)‚ while itself being reduced to manganese(II). (2) The half reactions for the process are: MnO4+8H + 5e→Mn2++4H2O reduction Fe2+ → Fe3+ + e− Oxidation When these half reaction are combined to give the overall balanced chemical
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the flame and the hydrogen gas. When gently squeezing a small portion of the hydrogen gas into the flame‚ the flame showed small flash with a pop. Oxygen Step B: Describe the hydrogen peroxide and manganese reaction. As adding hydrogen peroxide to the test tube containing a few pieces of manganese metal‚ gas bubbles rose from the solution slowly at first and vigorously over time. This reaction continued for a long time and solution turned into brown opaque color. Step E: Record your observations
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