57. Acetonyl-acetophenone, C6H5.CO.CH2.CH2.CO.CH3, is produced by condensing phenacyl bromide with sodium acetoacetate with subsequent elimination of carbon dioxide, and on dehydration gives aa-phenyl-methyl-furfurane. Now, as the materials which plants absorb are carbon dioxide from the air, and various inorganic compounds from the soil, together with water, it is clear that if this view is correct, vegetable protoplasm must be fed in a very different way from animal, and on very different materials. (Cyclophthalmus) S Carbon „ *Eoscorpiidae (Eoscorpius, Centromachus) iferous. Three such compounds are possible according to the number of valencies acting directly between the carbon atoms. Passing over the discovery of carbon disulphide by W. Of especial note are the curious compounds formed by the union of carbon monoxide with platinous chloride, discovered by Paul Schiitzenberger and subsequently investigated by F. This has proved to be erroneous; it is non-metallic in character, and its name was altered to silicon, from analogy with carbon and boron. In water and in ethylene experiment shows that 8 parts by weight of oxygen and 6 parts of carbon, respectively, are in union with one part of hydrogen; also, if the diagrams are correct, these numbers must be in the ratio of the atomic weights of oxygen and carbon. Such an oscillation valve was first used by Fleming as a receiver for wireless telegraph purposes in 1904 as follows: - In between the receiving antenna and the earth is placed the primary coil of an oscillation transformer; the secondary circuit of this transformer contains a galvanometer in series with it, and the two together are joined between the external negative terminal of the carbon filament of the above-described lamp and the insulated platinum plate. The heavy traffic tinctures the air with. Mehner patented heating the oxides of silicon, boron or magnesium with coal or coke in an electric furnace, and then passing in nitrogen, which forms, with the metal liberated by the action of the carbon, a readily decomposable nitride. 4 The following are the symbols employed by Dalton: which represent in order, hydrogen, nitrogen, carbon, oxygen, phosphorus, sulphur, magnesia, lime, soda, potash, strontia, baryta, mercury; iron, zinc, copper, lead, silver, platinum, and gold were represented by circles enclosing the initial letter of the element. 2. The inactive variety is known as paramandelic acid. This supports a local community as well as being a way to reduce carbon footprint concerns. Never mind the carbon footprint that will leave on the otherwise eco-friendly Westside. became so heated as to cause the decomposition of some of the gas before combustion, the jet being choked up by the carbon which deposited in a very dense form; and as the use of acetylene under pressures greater than one hundred inches of water was prohibited, no advance was made in this direction. PYRIMIDINES, METADIAZINES or Miazines, in organic chemistry, a series of heterocyclic compounds containing a ring complex, composed of four carbon atoms and two nitrogen atoms, the nitrogen atoms being in the meta-position. Calcium cyanamide has assumed importance in agriculture since the discovery of its economic production in the electric furnace, wherein calcium carbide takes up nitrogen from the atmosphere to form the cyanamide with the simultaneous liberation of carbon. Humans require relatively little oxygen, and plants are constantly transforming the carbon dioxide we exhale back into useful oxygen. What is a Activated Carbon? Since the molecule contains an asymmetric carbon atom, the acid exists in three forms, one being an inactive "racemic" mixture, and the other two being optically active forms. The aqueous solution of this salt liberates carbon dioxide on exposure to air or on heating, and becomes alkaline in reaction. These substances, and also carbon, sulphur, selenium and tellurium, render the metal very brittle. He also showed that on heating mercury calx alone an " air " was liberated which differed from other " airs," and was slightly heavier than ordinary air; moreover, the weight of the " air " set free from a given weight of the calx was equal to the weight taken up in forming the calx from mercury, and if the calx be heated with charcoal, the metal was recovered and a gas named " fixed air," the modern carbon dioxide, was formed. CH CH HC, N CH HC CH HC HC HC Hcch Hc Ch Ch Kekule t i Dewar Ladenburg One of the earliest and strongest objections urged against Kekule's formula was that it demanded two isomeric ortho-di-substitution derivatives; for if we number the carbon atoms in cyclical order from i to 6, then the derivatives 1.2 and 1.6 should be different.'. The separation of carbon atoms united by single affinities in this manner at the time the observation was made was altogether without precedent. A thin carbon pencil, forming a bridge between two stout carbon rods, is set in the midst of the mixture to be heated. Thus primary alcohols and aldehydes, both of the aliphatic and aromatic series, readily yield on oxidation acids containing the same number of carbon atoms. This rod was connected with the negative pole of the generator, and was suspended from one arm of a balance-beam, while from the other end of the beam was suspended a vertical hollow iron cylinder, which could be moved into or out of a wire coil or solenoid joined as a shunt across the two carbon rods of the furnace. Through this incision, the abdominal cavity is distended with, 14. These seed-feeders may be killed in the seeds by subjecting them to the fumes of bisulphide of carbon. Only if it begins a sentence, in which case you should capitalize the C. The atmosphere didn't literally need the Carbon Dioxide! Definition of Emission the act of releasing or sending out something Examples of Emission in a sentence The mechanic is checking the engine to identify the source of the emission coming from my car. Research has noticed a reduction in the ability of the oceans to absorb carbon. Examples of Carbon cycle in a sentence. The proprietors of this restaurant are committed to producing quality food and decreasing its carbon footprint, making it a healthy choice for you and the environment. 1 : a nonmetallic chemical element with atomic number 6 that readily forms compounds with many other elements and is a constituent of organic compounds in all known living tissues — see Chemical Elements Table. The gas contains a certain amount of hydrogen and oxides of carbon, also traces of nitrogen. Speed dating sentence correction: 1 day ago 36 sentence. As the carbon content of the molecule increases, they become less soluble in water, and their smell becomes less marked with the increase in boiling point, the highest members of the series being odourless solids, which can only be distilled without decomposition invacuo. The tetroxide, 0s04, can be easily reduced to the metal by dissolving it in hydrochloric acid and adding zinc, mercury, or an alkaline formate to the liquid, or by passing its vapour, mixed with carbon dioxide and monoxide, through a red-hot porcelain tube. Choose a language, then type a word below to get example sentences for that word. 5. CK 1 280857 Carbon dioxide sometimes harms people. A very pure form of iron, which from the method of its manufacture is called " steel," is now extensively used for the construction of dynamo magnets; this metal sometimes contains not more than 0.3% of foreign substances, including carbon, and is magnetically superior to the best commercial wrought iron. "He used a carbon filament in an oxygen-free bulb" "Carbon dioxide snow" 3- A carbon tax is a form of pollution tax. CK 266244 Trees give off oxygen and absorb carbon dioxide. Many of the earlier-known silicon alkyl compounds were isolated by Friedel and Crafts and by Ladenburg, the method adopted consisting in the interaction of the zinc alkyl compounds with silicon halides or esters of silicic acids. From the hotel window, I could see the emission of pollutants coming from a nearby factory. Even prior to the discovery of petroleum in commercial quantities, a number of chemists had made determinations of the chemical composition of several different varieties, and these investigations, supplemented by those of a later date, show that petroleum consists of about 84% by weight of carbon with 12% of hydrogen, and varying proportions of sulphur, nitrogen and oxygen. From our standpoint, the plant wastes all the rest of its energy on riotous living: growing roots and leaves, soaking up water, separating carbon molecules from oxygen ones. A hydrated oxide, 2PbO H 2 O, is obtained when a solution of the monoxide in potash is treated with carbon dioxide. Acting upon this discovery, he constructed an instrument which he called a " microphone," 6 and which consisted essentially of two hard carbon electrodes placed in contact, with a current passing through the point of contact and a telephone included in the same circuit. In other cases carbon fragments are mixed throughout the charge, as in E.H. By repeating the process a non-fermentable gluco-octose and a fermentable glucononose may be prepared. The carbide, SmC2, is formed when the oxide is heated with carbon in the electric furnace. Kopp, begun in 1842, on the molecular volumes, the volume occupied by one gramme molecular weight of a substance, of liquids measured at their boiling-point under atmospheric pressure, brought to light a series of additive relations which, in the case of carbon compounds, render it possible to predict, in some measure, the cornposition of the substance. A sheet iron case is then placed within the furnace, and the space between it and the walls rammed with limed charcoal; the interior is filled with fragments of the iron or copper to be alloyed, mixed with alumina and coarse charcoal, broken pieces of carbon being placed in position to connect the electrodes. Recent Examples on the Web This is almost a carbon copy of the 2018 race where Acton slid past Lewis by 397 votes. In de Lambilly's process air and steam is led over white-hot coke, and carbon dioxide or monoxide removed from the escaping gases according as ammonium formate or carbonate is wanted. PYRAZINES, PIAZINES, or Paradiazines, In organic chem istry, a group of compounds containing a ring system composed of 4 carbon, atoms and 2 nitrogen atoms, the nitrogen atoms being in the para position. Examples of carbon in a Sentence. From the heating of native calcium sulphate and carbon is obtained calx sulphurata (U.S. and B.P. Flecks of blood remained on the carbon fiber bullet. Boron sulphide B 2 S 3 can be obtained by the direct union of the two elements at a white heat or from the tri-iodide and sulphur at 44 0 ° C., but is most conveniently prepared by heating a mixture of the trioxide and carbon in a stream of carbon bisulphide vapour. It's difficult to see carbon in a sentence. He is a carbon of his father. In alkaline solution, potassium permanganate oxidizes it to inactive tartaric acid and carbon dioxide (0. Either they are placed in a leaden cupboard into which the vapour is introduced, or they are dipped for a few seconds in a mixture of one part of chloride of sulphur and forty parts of carbon disulphide or purified light petroleum. 58. This comes in almost all such cases from the decomposition of sugar, which is split up by the protoplasm into alcohol and carbon dioxide. 4. He is also due to outline Chinese carbon emission cuts seen as crucial for Paris’ UN climate summit. Carbon dioxide makes up less than a thousandth of the atmosphere. The sepals are generally organs for the protection of the flower-bud; the petals, for attracting insects by their conspicuous form and color; the foliage-leaves, for the assimilation of carbon dioxide and other associated functions. Azurite occurs with malachite in the upper portions of deposits of copper ore, and owes its origin to the alteration of the sulphide or of native copper by water containing carbon dioxide and oxygen. In classifying closed chain compounds, the first step consists in dividing them into: (1) carbocyclic, in which the ring is composed solely of carbon atoms - these are also known as homocyclic or isocyclic on account of the identity of the members of the ring - and (2) heterocyclic, in which different elements go to make up the ring. 2. The strength of the current may also be regulated by introducing lengths of German silver or iron wire, carbon rod, or other inferior conductors in the path of the current, and a series of such resistances should always be provided close to the tanks. Similar considerations will apply to rings containing other elements besides carbon. Moissan obtained a carbon-bearing metal by fusing the pentoxide with carbon in the electric furnace. Pearlite, steel (carbon about r%) forged and annealed at 800° C. Magnified 1000 diameters. Plants absorb carbon in the form of carbon dioxide. Mit climate scientist dr. 1 day ago 36 sentence. The carbon cycle is the cycle by which carbon moves through our Earth’s various systems. You can practice spelling and usage of the word by getting 10 examples of sentences with “carbon tax”. Carbon dioxide is a molecule that contains two oxygen atoms and one carbon atom. When perfectly pure, carbon bisulphide is a colourless, somewhat pleasant smelling, highly refractive liquid, of specific gravity 1 2661 (18°/4°) (J. (7) (2) In the first symbol it is assumed that one of the affinities of each of the two central carbon atoms common to the two rings acts into both rings, an assumption involving a somewhat wide departure from all ordinary views as to the manner in which affinity acts. The identity of the formulae and osazones of d-mannose and d-glucose showed that the stereochemical differences were situated at the carbon atom adjacent to the aldehyde group. Translations of the phrase CARBON UNIT from english to russian and examples of the use of "CARBON UNIT" in a sentence with their translations: ...opportunity to sell its saved carbon … Acids yield a sodium salt and free oxygen or hydrogen peroxide; with carbon dioxide it gives sodium carbonate and free oxygen; carbon monoxide gives the carbonate; whilst nitrous and nitric oxides give the nitrate. the carbon rod through which current is conducted between the electrode holder and the arc in carbon arc lighting or welding. He was simply a carbon copy. Calcium chloride, CaCl 2, occurs in many natural waters, and as a by-product in the manufacture of carbonic acid (carbon dioxide), and potassium chlorate. These show that a definite intake of carbon dioxide is always accompanied by an exhalation of an equal volume of oxygen. The latter when heated with hydrochloric acid to 170°, or water to 200°, separates carbon with the formation of protocatechuic acid, I. Piperic acid differs from piperonylic acid by the group C4H 4, and it was apparent that these carbon atoms must be attached to the carbon atom which appears in the carboxyl group of piperonylic acid, for if they were directly attached to the benzene ring polycarboxylic acids would result in oxidation. The definition of carbon is a nonmetallic chemical element found in all natural element combinations and some man-made element combinations. We have only three layers of material-- the metal contact, the carbon film and the electrical contacts to address each pixel. In a large supply system such failure would mean a serious loss of revenue. 3. pure sand, a pure form of carbonate of lime, and sulphate of soda, with the addition of a suitable proportion of carbon in the form of coke, charcoal or anthracite coal. Reduced carbon emissions haven’t been the bike share’s only impact on the city. The drawing is transferred onto the wood by means of, 18. 6. Sulphur chloride, S2C12, is obtained as a by-product in the manufacture of carbon tetrachloride from carbon bisulphide and chlorine, and may also be prepared on the small scale by distilling sulphur in a chlorine gas, or by the action of sulphur on sulphuryl chloride in the presence of aluminium chloride (0. Natural gas is found to consist mainly of the lower paraffins, with varying quantities of carbon dioxide, carbon monoxide, hydrogen, nitrogen and oxygen, in some cases also sulphuretted hydrogen and possibly ammonia. This tetrahedral configuration is based on the existence of only one methylene dichloride, two being necessary if the carbon valencies were directed from the centre of a plane square to its corners, and on the existence of two optical isomers of the formula C. A. 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