potassium nitrate‚ KNO3 nitric acid‚ HNO3 trisodium phosphate‚ Na3PO4 sodium thiocyanate‚ NaSCN sulfuric acid‚ H2SO4 distilled water‚ dH2O B. Apparatus test tubes iron ring 250-mL beaker iron stand bunsen burner C. Others iron nails copper strip sand paper zinc strip pliers 2 III. Procedure A. Reactions of Iron with various Aqueous Solutions In determining the reactions of iron immersed in various aqueous solutions‚ three set-ups were made‚ each consists of four test tubes with iron nails
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peroxide combination ________________________ Day 2 Materials: Part III: a penny dated after 1983 metal file or coarse sandpaper vinegar (CH3COOH) Part IV: baking soda (NaHCO3) vinegar (CH3COOH) cup spoon Procedures: Part III: Reaction between zinc and acetic acid 1. Use a file or sandpaper to completely remove the
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Class X Question 1: Chapter 1 – Chemical Reactions and Equations Science Why should a magnesium ribbon be cleaned before burning in air? Answer Magnesium is very reactive metal. When stored it reacts with oxygen to form a layer magnesium oxide on its surface. This layer of magnesium oxide is quite stable and prevents further reaction of magnesium with oxygen. The magnesium ribbon is cleaned by sand paper to remove this layer so that the underlying metal can be exposed into air. Question
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largest producer of both bauxite and alumina in the world. Bauxite is mined in Queensland‚ the Northern Territory‚ and Western Australia. * Copper (Cu): In Australia‚ copper is found mainly in rocks more than 250 million years old. Australia’s main mines are located in South Australia and in Queensland. Australia has approximately 6% of the world’s copper. * Diamond: Diamonds were mined in north-eastern New South Wales from 1867 to 1922. Other minor occurrences of
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Potatoes May Power The Batteries Of The Future Friday‚ June 18‚ 2010 - by Ray Willington Oh‚ batteries. Can’t live with ’em‚ can’t live without ’em. It sounds like a power ballad‚ but it’s the story of our lives around here. We’ve been dealing with lofty promises and batteries that kick the bucket far too early‚ for years now. And the fact that we’re still dealing with lead-acid batteries is sort of a baffling thing to wrap one’s mind around. But all of that just might be changing. We won’t get
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intent environment. Quail eggs contain 74.58% moisture‚ 12.63% crude protein‚ 10.83% crude fat‚ 0.48% carbohydrates and 1.28% ash. It is rich in antioxidant and a very valuable source of vitamins A‚ B1‚ B2‚ B6‚ B12 and vitamin D‚ iron‚ magnesium‚ zinc‚ copper‚ phosphorus and essential micro-nutrients‚ minerals and amino acids. Hence‚ quail eggs are recommended for regular consumption. Moreover‚ quail industry has also great potential in the market due to minimal market competition‚ high demand and
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Independent Variable: Fruit or vegetable used. Dependent Variable: Amount of electrical input. Table 1 Variables Test Subject | Controlled Variables for each Fruit and Vegetable | Unit of Electricity For All Test Subjects | Apple | Copper nail | mV | Carrot | Zinc nail | | Grapefruit | | | Kiwi | | | Lemon | | | Lime | | | Orange | | | Pear | | | Potato | | | Tomato | | | Hypothesis As I test fruits and vegetables‚ the grapefruit will produce
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Philippines- fishes were killed due to the contamination of the Taft River in Samar with lead‚ copper‚ iron‚ cadmium‚ and zinc (Social Assessment of the Bagacay Mine‚ n.d.; Slideshare‚ 2012). Heavy metals can be dangerous not only to fishes but also to human’s health‚ especially when acquired in significantly high amount. Cadmium can cause Pneumoconiosis and kidney failure‚ chromium can cause stomach cancer‚ copper can damage the cognitive function of human’s brain‚ lead can trigger chronic renal failure
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Department of Chemical Engineering and Applied Chemistry‚ University of Toronto‚ 200 College St.‚ Toronto‚ ON‚ M5S 3E5‚ Canada 4 University of New Brunswick‚ Saint John‚ NB‚ E2L 4L5‚ Canada Copper diethyldithiocarbamate‚ cadmium diethyldithiocarbamate‚ lead diethyldithiocarbamate‚ nickel diethyldithiocarbamate and zinc diethyldithiocarbamate have been synthesized. They have been characterized using TG‚ DTA‚ IR spectroscopy‚ X-ray and atomic absorption spectrophotometry. The thermal conversion of the compounds
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bus 9.2 – Production of Materials: Δ. Construct word and balanced formulae equations of all chemical reactions as they are encountered in this module: • Basic reactions to remember: – Acid reactions: ▪ acid + base [pic] salt + water HCl(aq) + NaOH(aq) [pic]NaCl(s) + H2O(l) ▪ acid + metal [pic] salt + hydrogen gas HCl(aq) + Mg(s)[pic]MgCl2(s) + H2 (g) ▪ acid + carbonate [pic] salt + carbon dioxide gas + water HCl(aq) + CaCO3(s)[pic] CaCl(s) + CO2(g) + H2O
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