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E170 (other)
E170 may refer to: * Model E-170 Regional Jet, see Embraer E-Jets * The E number of a food additive or colouring for calcium carbonate or chalk * Toyota Corolla (E170) The E170/E180 series Toyota Corolla is the eleventh-generation of the Corolla that was sold internationally from 2013 to 2024, and has been manufactured in Pakistan since 2014. Two basic front and rear styling treatments are fitted to the E170 ...
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Embraer E-Jets
The Embraer E-Jet family is a series of four-abreast, narrow-body, short- to medium-range, twin-engined jet airliners designed and produced by Brazilian aerospace manufacturer Embraer. The E-Jet was designed to complement Embraer’s earlier ERJ family, the company’s first jet-powered regional aircraft. With a capacity of 66 to 124 passengers, the E-Jets were significantly larger than any aircraft Embraer had developed before that time. The project was unveiled in early 1997 and formally introduced at the 1999 Paris Air Show. On 19 February 2002, the first E-Jet prototype completed its maiden flight, and production began later that year. The first E170 was delivered to LOT Polish Airlines on 17 March 2004. Initial rollout issues were quickly overcome, and Embraer rapidly expanded product support for better global coverage. Larger variants, the E190 and E195, entered service later in 2004, while a stretched version of the E170, the E175, was introduced in mid-2005. The E-J ...
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E Number
E numbers, short for Europe numbers, are codes for substances used as food additives, including those found naturally in many foods, such as vitamin C, for use within the European Union (EU) and European Free Trade Association (EFTA). Commonly found on food labels, their safety assessment and approval are the responsibility of the European Food Safety Authority (EFSA). The fact that an additive has an E number implies that its use was at one time permitted in products for sale in the European Single Market; some of these additives are no longer allowed today. Having a single unified list for food additives was first agreed upon in 1962 with food colouring. In 1964, the directives for preservatives were added, in 1970 antioxidants were added, in 1974 emulsifiers, stabilisers, thickeners and gelling agents were added as well. Numbering schemes The numbering scheme follows that of the International Numbering System for Food Additives, International Numbering System (INS) as deter ...
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Calcium Carbonate
Calcium carbonate is a chemical compound with the chemical formula . It is a common substance found in Rock (geology), rocks as the minerals calcite and aragonite, most notably in chalk and limestone, eggshells, gastropod shells, shellfish skeletons and pearls. Materials containing much calcium carbonate or resembling it are described as calcareous. Calcium carbonate is the active ingredient in agricultural lime and is produced when calcium ions in hard water react with carbonate ions to form limescale. It has medical use as a calcium supplement or as an antacid, but excessive consumption can be hazardous and cause hypercalcemia and digestive issues. Chemistry Calcium carbonate shares the typical properties of other carbonates. Notably, it: *reacts with acids, releasing carbonic acid which quickly disintegrates into carbon dioxide and water: : *releases carbon dioxide upon heating, called a thermal decomposition reaction, or calcination (to above 840 °C in the case of ), t ...
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Chalk
Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor. Chalk is common throughout Western Europe, where deposits underlie parts of France, and steep cliffs are often seen where they meet the sea in places such as the Dover cliffs on the Kent coast of the English Channel. Chalk is mined for use in industry, such as for quicklime, bricks and builder's putty, and in agriculture, for raising pH in soils with high acidity. It is also used for " blackboard chalk" for writing and drawing on various types of surfaces, although these can also be manufactured from other carbonate-based minerals, or gypsum. Description Chalk is a fine-textured, earthy type of limestone distinguished by its light colour, softness, and high porosity. It is composed mostly of tiny fragments of the calcite shells or sk ...
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