The lime industry is a significant carbon dioxide emitter. The manufacture of one tonne of calcium oxide involves decomposing calcium carbonate‚ with the formation of 785 kg of CO2 in some applications‚ such as when used as mortar; this CO2 is later re-adsorbed as the mortar goes off. Additionally‚ if the heat supplied to form the lime (3.75 MJ/kg in an efficient kiln) is obtained by burning fossil fuel it will release CO2: in the case of coal fuel 295 kg/t; in the case of natural gas fuel 206 kg/t
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acid level > 8 · potassium level > 6 · phosphorus level > 4.5 · calcium level < 7 Clinical TLS - any of the above laboratory values with an elevated serum creatinine‚ a new arrhythmia‚ seizure or sudden death Hyperphosphatemia · caused by the release of intracellular phosphate pools within tumor cells · causes a reciprocal decrease in serum calcium‚ which then · causes the deposition of calcium phosphate crystals in the renal tubules and in the microvasculature‚ and can
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not isolate it he could only isolate the barium oxide. Another person to isolate the barium oxide was a man named Johan Gahn but he did it two years after Scheele did. Davy who finally managed to isolate barium on its own‚ did it by analogy with calcium and decided to name it Barium after the word baryta. Pure oxygen used to be produce through the Brin Process before they started using barium peroxide to liquefy air and produce oxygen. Barium appears as a silvery white color metal. Barium van be
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Podzols In soil science‚ podzols (also known as podsols or Spodosols) are the typical soils of coniferous or boreal forests. They are also the typical soils of eucalypt forests and headlands in southern Australia. The name Podzol is derived from the Russian words pod = under and zola = ash. Characteristics of Podzol soils - Deep organic layer comprising L (litter)‚ F (fermenting organic matter) and H (humus) forest‚ less under moorland - An ash-grey‚ structure less‚ silica rich E or elluvial
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permanganate 7783-98-4 AgN3 silver azide 13863-88-2 AgNO3 silver nitrate 7761-88-8 Ag2O silver oxide 1301-96-8 AgONC silver fulminate 5610-59-3 AgSNC silver thiocyanate 14104-20-2 Ag2C2 silver acetylide 7659-31-6 Ag2CO3 silver(I) carbonate 534-16-7 Ag2C2O4 silver oxalate 533-51-7 Ag2Cl2 silver(II) dichloride 75763-82-5 Ag2CrO4 silver chromate 7784-01-2 Ag2Cr2O7 silver dichromate Ag2F silver subfluoride 1302-01-8 Ag2MoO4 silver molybdate 13765-74-7 Ag2O silver(I)
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Toothpastes also have TSSP in it. The gritty feeling of toothpastes is the abrasives. They help get rid of plaque‚ stains‚ and polishing teeth. Today the most common abrasives are made up of hydrated silica‚ aluminium oxides‚ and calcium carbonate. Different phosphates of calcium or aluminium can be also used‚ but are less common. Detergents‚ like abrasives‚ also provide cleaning power. They loosen leftover food and plaque so that the toothbrush can scrub them away. Detergents have cleaning agents called
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the ions in the acids react with the calcium ions in limescale to then form a soluble salt. The acids also react with the carbonates in lime scale to produce water and carbon dioxide. Then the whole solution washes out taking away as much lime scale and possible. Sulfamic acid The advantages of using sulfamic acid as a de-scaler are that it is the faster de-scaler which means it can give a greater concentration of atoms that are able to react with the calcium in lime scale. It is also safe to use
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minerals expands‚ turning into a new compound but a more vulnerable one. For example‚ calcium sulphate absorb in water to become gypsum. Besides‚ solution and carbonation dissolve soluble minerals in pure water or acid rain. For example‚ calcium carbonate in limestone is easily dissolved by carbonic acid (rainwater dissolves carbon dioxide) or acid rain ( rainwater dissolves sculpture dioxide). Calcium carbonate is then removed from the rocks in solution. Apart from weathering‚ water acts on the
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Purpose To explore transport of materials in three semi-permeable membranes: dialysis tubing‚ eggs‚ and onion cells. Background Information 1. Diffusion is the movement of solutes from high to low concentration. Osmosis is the movement of water from low to high concentration. Both refer to movement in/out of a cell‚ but osmosis refers specifically to water. 2. Isotonic‚ hypertonic‚ and hypotonic all refer to the comparison of concentrations of solutes in verses out of the cell. Isotonic is
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properties 9.15 Transition elements 9.16 Noble gases 9 Metals 10.1 Properties of metals 10.2 Reactivity series 10.3 (a) Extraction of metals 10.3 (b) Uses of metals 10 Air and water 11 Sulphur 12 Carbonates 13 Organic chemistry 14.4 Names of compounds 14.5 Fuels 14.6 Homologous series 14.7 Alkanes 14.8 Alkenes 14.9 Alcohols 14.10 Acids 14.11 Macromolecules 14.8 (a) Synthetic polymers
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