| 单词 | calcium oxide |
| 例句 | When the calcium oxide has softened the delicate inner skin, it’s peeled off slowly and carefully. I Am Not Your Perfect Mexican Daughter 2017-10-17T00:00:00Z Lime is a white caustic powdery substance comprised of calcium oxide, made by heating limestone. Scientists chip away at how ancient Roman concrete stood test of time 2023-01-09T05:00:00Z Lime clasts have long been observed in the quicklime, or calcium oxide, that was a mainstay of the Roman empire’s concrete mixtures. Ancient Roman architecture made with self-healing concrete, study finds 2023-01-08T05:00:00Z Solid calcium carbonate is heated and decomposes to solid calcium oxide and carbon dioxide gas. Chemistry 2019-02-14T00:00:00Z Once you grind calcium oxide into powder and add water, you re-create limestone. The secret ingredient that can keep concrete from crumbling 2022-02-03T05:00:00Z When these are treated at temperature of about 900C, the pellets decompose into a CO2 stream and calcium oxide. Climate change: Large-scale CO2 removal facility set for Scotland 2021-06-24T04:00:00Z This calcium oxide reacts further to form cement. Building's hard problem - making concrete green 2021-05-13T04:00:00Z Among the weirder finds here is a kiln once used to transform quarried limestone into quicklime, the common chemical compound better known as calcium oxide. 5 day hikes from Seattle that end in surprising mysterious objects 2021-04-28T04:00:00Z The first step is the decomposition of solid calcium carbonate from seashells to form solid calcium oxide and gaseous carbon dioxide. Chemistry 2019-02-14T00:00:00Z But UK-based company Oxford PV is combining silicon with a material called perovskite - a semi conductor mineral with a crystal structure of titanium calcium oxide - which turns the blue wavelengths into electrical energy. Why I'm feeling hopeful about the environment in 2021 2021-01-03T05:00:00Z Water is added to the calcium oxide, and the resulting slurry is returned to the pellet reactor, to regenerate the hydroxide solution used in the process. Blamed for Climate Change, Oil Companies Invest in Carbon Removal 2019-04-07T04:00:00Z The chalky calcium carbonate pellets are then treated at a high temperature of about 900C, with the pellets decomposing into a CO2 stream and calcium oxide. Climate change 'magic bullet' gets boost 2019-04-03T04:00:00Z That leaves you with calcium oxide - more commonly known as lime. Calcium, building block for the world 2014-03-04T00:20:20Z The second step is the formation of solid calcium hydroxide as the only product from the reaction of the solid calcium oxide with liquid water. Chemistry 2019-02-14T00:00:00Z When the ash contains phosphates the factor 10 cannot be applied, but the bases consisting of calcium oxide, etc., must be determined, and the factor 10 applied to them. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Water is added to the calcium oxide, and the resulting slurry is returned to the pellet reactor, to regenerate the hydroxide solution used in the process. Blamed for Climate Change, Oil Companies Invest in Carbon Removal 2019-04-07T04:00:00Z When heat is applied under right conditions the carbon dioxide, CO2, is driven off, and there remains CaO, which is calcium oxide, called fresh burned lime. Right Use of Lime in Soil Improvement Lime now means usually calcium oxide, but its original sense is anything viscous; cf. The Romance of Words (4th ed.) When 100 grams of solid calcium carbonate is heated, 44 grams of carbon dioxide and 56 grams of calcium oxide are produced. Chemistry 2019-02-14T00:00:00Z In what respects does aluminium oxide differ from calcium oxide in properties? An Elementary Study of Chemistry Water is added to the calcium oxide, and the resulting slurry is returned to the pellet reactor, to regenerate the hydroxide solution used in the process. Blamed for Climate Change, Oil Companies Invest in Carbon Removal 2019-04-07T04:00:00Z Calcium Hydroxide is a compound made by permitting calcium oxide to combine with water, and is known as lime hydrate. Right Use of Lime in Soil Improvement Wood ashes are also a good source of lime, being about one-third calcium oxide. Apple Growing The oxides of the alkali metals have little industrial utility, unlike magnesium oxide, calcium oxide, and aluminum oxide. Chemistry 2019-02-14T00:00:00Z It combines with water to form magnesium hydroxide, but much more slowly and with the production of much less heat than in the case of calcium oxide. An Elementary Study of Chemistry The precipitate of calcium oxalate may be converted into calcium oxide by ignition without previous drying. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes The 56 pounds calcium oxide, or fresh burned lime, have the same power to correct acidity as this same material had when it was bound up in the 100 pounds of limestone. Right Use of Lime in Soil Improvement When acetylene is employed, the yield is pure carbon, for the only by-product is water vapour; but if the carbide process is adopted, the carbon remains mixed with calcium oxide. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power Blocks of calcium oxide heated by gas flames were the stage lights in theaters before electricity was available. Chemistry 2019-02-14T00:00:00Z Some limestone is decomposed by the heat, forming calcium oxide. An Elementary Study of Chemistry The calcium in a sample of dolomite weighing 0.9380 gram is precipitated as calcium oxalate and ignited to calcium oxide. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes The electric arc, however, will melt even this, and the most refractory vessels are of calcium oxide or of graphite. An Introduction to Chemical Science Analogous reactions take place when either oxide of carbon is led over calcium carbide heated to a temperature of 200° or 250° C., the second product in this case being calcium oxide. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power Since both calcium oxide and hydroxide are white substances, it was thought that a brownish, greyish, or blackish residue must necessarily point to incipient polymerisation of the gas. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power When treated with water the calcium oxide is changed into hydroxide, and this prevents the water from decomposing the insoluble calcium sulphide. An Elementary Study of Chemistry Calculate the grams of calcium oxide and barium oxide in the mixture. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes Hitherto, for the sake of simplicity, the by-product in the preparation of acetylene has been described as calcium oxide or quicklime. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power The reaction, in fact, between calcium oxide and water is reversible, and whether those substances combine or dissociate is simply a question of temperature. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power In other words, as the temperature rises, the heat of hydration of calcium oxide diminishes, and calcium hydroxide becomes constantly a less stable material. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power |
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