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 the most electricity
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irritation. Personal Protection- Suitable ventilation if handling powder. Zinc‚ Zn(s) Stability-Stable. Incompatible with amines‚ cadmium‚ sulfur‚ chlorinated solvents‚ strong acids‚ strong bases. Air and moisture sensitive. Zinc powder is very flammable. Toxicology-May be harmful if swallowed or inhaled. May act as an irritant. Personal Protection- Do not breathe dust. Wear safety glasses if handling powdered zinc. Magnesium‚ Mg(s) Stability-Stable. Reacts violently with halogens‚ chlorinated
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What chemical compounds does the human body consist of? Oxygen (65%) and hydrogen (10%) are predominantly found in water‚ which makes up about 60 percent of the body by weight. It’s practically impossible to imagine life without water. Carbon (18%) is synonymous with life. Its central role is due to the fact that it has four bonding sites that allow for the building of long‚ complex chains of molecules. Moreover‚ carbon bonds can be formed and broken with a modest amount of energy‚ allowing
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Biohome Concept Statement People affected by biochemical components‚ specifically radiation‚ zinc‚ and lead being released into the air‚ soil and most importantly water because of an Earthquake is a disaster where people could be forced to live in a temporary or emergency shelter. The focus for these shelters will be to accommodate the physical‚ psychological and sociological needs for people in search of housing. An emphasis on maintaining a sense of self‚ social and cultural identity will
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Calcium mg/kg Sodium mg/kg Iron mg/kg Manganese mg/kg Zinc mg/kg Phosphorus mg/kg Wheat flour(72%) 427 238 151 38.03 5.72 3.19 784 Banana peels 16303 3321 440 1217 54.73 1.97 641 The result of mineral content of wheat flour and banana peels is tabulated in table (3) that shows the concentration of phosphorus in wheat flour was the highest (784mg/kg) followed by potassium‚ calcium‚ sodium‚ iron‚ manganese and zinc (427‚ 238‚ 151‚ 38.03‚ 5.72 and 3.19 mg/kg) respectively
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CETC INFO SHEET Series of 2009 MAKE THAT SUGAR FROM COCONUT TODDY Seven to eight liters of fresh tuba can produce one kilo of coconut sugar! Yes! Tuba‚ our popular alcoholic drink‚ can be transformed into sugar. And this sugar has a high potential for multi- uses as natural sweetener. It is mostly used for cooking desserts and as raw material of food industries ‚ like confectionery. Thailand is already exporting coconut sugar to Australia‚ Japan‚ United
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following questions‚ assume that the densities and specific heat capacities of the solutions are the same as pure water i.e. ρ = 1.0 gcm-3 and c = 4.18 Jg-1K-1 1. Zinc will displace copper from copper (II) sulphate solution according to the following equation: CuSO4(aq) + Zn(s) ( Cu(s) + ZnSO4(aq) If an excess of zinc powder is added to 50 cm3 of 1.0 moldm-3 copper(II) sulphate‚ the temperature increases by 6.3 oC. Calculate the enthalpy change for the reaction. 2. Magnesium will
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oxidising agents. In many cases‚ the corrosion of a metal results in the formation of the metal oxide or hydroxide. However in some cases‚ other corrosion products such as carbonates‚ sulfides and even nitrides may be formed. e.g. METAL IRON (Fe) ZINC (Zn) ALUMINIUM (Al) MAGNESIUM (Mg) SILVER (Ag) POSSIBLE CORROSION PRODUCTS Fe2O3 Fe(OH)3 Fe2O3.H2O ZnO Zn(OH)2 ZnCO3 Al2O3 Al(OH)3 MgO Mg(OH)2 Mg3N2 Ag2O Ag2S * In this study unit on corrosion‚ we shall be principally concerned with the corrosion
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5g Calcium carbonate‚ 0.5g Copper chloride solution‚ 4mL Hydrochloric acid‚ 4mL Magnesium ribbon‚ 2-4 cm strips Phenolphthalein indicator‚ 1 drop Sodium hydroxide solution‚ 1mL Sodium phosphate solution‚ 1mL Water Zinc‚ mossy‚ or zinc shot‚ 1-2 pieces Introduction: In this lab we will classify different chemical reactions. Classifying chemical reactions allows us to predict what chemical reactions will occur when different substances are mixed. Procedures: Reaction 1)
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until a precipitate formed. All observations were recorded. Then‚ 10 drops of nitrate solution and 10 drops of 6 M NaOH were mixed together in a centrifuge tube‚ then the mixture was transferred to a dry centrifuge tube with a pipet. A few granules of zinc was added to the centrifuge tube and it was heated for 2 minutes before the Zn started to break down and gas started to be emitted. A piece of red litmus paper was creased into a V and wetted and was placed into the top of the tube. The paper turned
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