A battery‚ which is actually an electric cell‚ is a device that produces electricity from a chemical reaction. In a one cell battery‚ you would find a negative electrode; an electrolyte‚ which conducts ions; a separator‚ also an ion conductor; and a positive electrode. Batteries are made of magnesium dioxide‚ graphite‚ electrolytes‚ zinc oxide and a paper soaked in an electrolyte solution. All of this is sealed in a insulated tube for safety. http://answers.ask.com/consumer_electronics/other/what_are_batteries_made_of
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be identified by a very intense yellow-orange flame. Potassium ion is identified by a lavender-pink flame. However‚ if both ions are present together‚ the intense flame of Na+ hides the color of the K+ flame. It is therefore necessary to use a blue cobalt glass plate to absorb the color of the sodium ion‚ so that the flame of potassium ion can be seen. The ammonium ion will not interfere with the flame tests. 35. Obtain a flame test wire from the instructor. Light a bunsen burner and place the
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steam to the atmosphere to prevent the nuclear power plant’s reactors from exploding after its cooling system failed following the massive earthquake. However the vapor contained some radiation particles. These particles are mainly iodine‚ caesium and cobalt. The radiation particles can shoot through space at very high speeds that when it go crashing through some material‚ it collides violently‚ disrupting the delicate balance of that substance. Thus it can easily penetrate deep inside the human body
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containing 6M hydrochloric acid as needed to clean wire · Test tubes containing: Copper sulfate Potassium sulfate Copper nitrate Potassium nitrate Strontium nitrate Calcium nitrate Copper chloride Strontium chloride Calcium chloride Cobalt chloride Sodium chloride Sodium nitrate Sodium sulfate Barium clroride Calcium nitrate · Tirrel burner · Matches · Goggles · Apron Procedure: Work in teams of two At each table there are two samples and two tirrel burners
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Zimbabwe has many different cultures which may include various ethnic groups endure. Food shortages and civil unrest have characterized life in Zimbabwe‚ formerly Rhodesia‚ since independence from the UK in 1980‚ obscuring many facets of daily life. Zimbabwe’s population is estimated to be 11.65 million‚ which 82 percent of them are Shona and 14 percent are Ndebele. Tonga‚ Shangaan and Venda are the other smaller ethnic group. English is the official language of Zimbabwe‚ and the rest of the populations
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Introduction In plant training for the professional is now essential to know in details the application mode of modern scientific and management issue aiming to familiar them correctly. This training is the bridge between the theories and principles with their practices‚ in other words between the institution and commercial organization. Sun Pharmaceuticals BD Ltd. is committed to ensure between lives through quality medicine. For this‚ I selected the Sun Pharmaceuticals BD Ltd. to be trained
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PRODUCTION OF CITRIC ACID Introduction: Citric acid is a White solid‚C3H4OH(COOH)3‚soluble in water and slightly soluble in organic solvents‚ which melts at 153 oC. Aqueous solutions of citric acid are slightly more acidic than solutions of acetic acid. Traces of citric acid are found in numerous plants and animals‚ because it is a nearly universal intermediate product of metabolism. Large amount of the acid are found in the juice of citrus fruits‚ from which it is precipitated by the
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Electrical technology – assignment 4 Properties of electrical materials and Effective use of technology P.5. Describe the properties and a typical application of a solid and a liquid or gas electrical conductor. A conductor is a material that allows free movement of electrons and therefore allows easy flow of electricity. Most conductors are metals. A common metal used as a conductor in electrical technology is aluminium. It is used quite a lot as it cheap‚ lightweight and in abundance compared
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How fast is your reaction? Part 1 – How temperature affect the rate of reaction Chemical equation Magnesium + hydrochloric acid → magnesium chloride + hydrogen Mg + 2HCL → MgCl2 + H2 Graph Conclusion and questions 1. What factors/variables did you keep the same in this experiment? * We kept the same volume of hydrochloric acid (10 cm3) and the magnesium ribbon (5cm) because that way we could get a fair test experiment. We also repeated
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Recipe for murder by C. Р. Donnel Recipe for murder by C. Р. Donnel The story “Recipe for murder” written by C.P. Donnel is a charmingly entitled text. The title is quite provocative‚ breathtaking; it gives much food for our thought and fancy‚ appeals to our imagination and emotions. The word “recipe” implicates equipment‚ ingredients‚ amounts‚ recommendation and cooking skills‚ but this word is followed by the word “murder”‚ which may make it a riveting and promising guide to action. We can make
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