noun
definition
Any oxide containing two oxygen atoms in each molecule.
Examples of dioxide in a Sentence
Of these carbon dioxide and water are the most prominent.
Humans require relatively little oxygen, and plants are constantly transforming the carbon dioxide we exhale back into useful oxygen.
When sulphur is burned in air or oxygen, sulphur dioxide is produced, which is a powerful disinfectant, used to fumigate rooms which have been occupied by persons suffering from some infectious disease.
Sulphur dioxide and sulphuretted hydrogen are present in volcanic exhalations and in many mineral waters.
Fungal and phanerogamic parasites can make no use of stich substances as carbon dioxide, but draw elaborated products from the bodies of their hosts.
The oxides of type RO are soluble in water, the solution possessing a strongly alkaline reaction and rapidly absorbing carbon dioxide on exposure; they are basic in character and dissolve readily in acids with the formation of the corresponding salts.
It may be obtained from argyrodite by heating the mineral in a current of hydrogen; or by heating the dioxide to redness with carbon.
We can prepare, in the laboratory, a white powder that proves to be calcium carbonate, that is, it appears to be wholly composed of carbon dioxide and lime.
It burns with a pale blue flame, forming sulphur dioxide and water.
We find in nature two other unlike substances, marble and Iceland spar, each of which is wholly composed of carbon dioxide and lime.
Gay-Lussac in 181q, is usually obtained in the form of its barium salt by suspending freshly precipitated hydrated manganese dioxide in water and passing sulphur dioxide into the mixture until all is dissolved; the barium salt is then precipitated by the careful addition of barium hydroxide.
It is only stable in dilute aqueous solution, for on concentration the acid decomposes with formation of sulphuric acid, sulphur dioxide and sulphur.
Membrane oxygenator-The artificial lung that adds oxygen and removes carbon dioxide.
Terrestrial plants have a gaseous interchange of oxygen and carbon dioxide which is necessary for respiration and feeding.
They are accompanied by intercellular channels serving for the conduction of oxygen to, and carbon dioxide from, the living cells in the interior of the wood, which would otherwise be cut off from the means of respiration.
It may lead to an incipient asphyxiation, as the supply of oxygen may be greatly interfered with and the escape of carbon dioxide may be almost stopped.
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.
Substances contained in the Protoplastn.Starch may be found in the chlorophyll bodies in the form of minute granules as the first visible product of the assimilation of carbon dioxide, and it occurs in large quantities as a reserve food material in the cells of various parts of plants.
Four oxides of sulphur a.re known, namely sulphur dioxide, S02, sulphur trioxide, S03, sulphur sesquioxide, S203, and persulphuric anhydride, S 2 0 7.
The dioxide has been known since the earliest times and is found as a naturally occurring product in the gaseous exhalations of volcanoes and in solution in some volcanic springs.
The sulphites are prepared by the action of sulphur dioxide on the oxides, hydroxides or carbonates of the metals, or by processes of precipitation.
When heated in air, tellurium burns, forming the dioxide Te02.
This is at first colourless carbon dioxide, but later on inflammable gases come out of the mass, which at this stage has turned into a thicker, pasty condition, showing that the end of the reaction is near.
The sulphides can be removed by " oxidizing " them into thiosulphates by means of atmospheric air, with or without the assistance of other agents, such as manganese peroxide; or by " carbonating " them with lime-kiln or other gases containing carbon dioxide; or by precipitating them with lead or zinc oxide.
The same apparatus is used for " oxidizing " by means of atmospheric air passed through by means of an injector; sometimes both air and carbon dioxide are passed in at the same time.
The wet alkali-waste as it comes from the lixiviating vats, is transferred into upright iron cylinders in which it is systematically treated with lime-kiln gases until the whole of the calcium sulphide has been converted into calcium carbonate, the carbon dioxide of the lime-kiln gases being entirely exhausted.
Any sulphuric acid present is removed by baryta water, the precipitated barium sulphate filtered off, the solution acidified by hydrochloric acid and reduced by sulphur dioxide.
Also refers to a respiratory therapy involving deeper and/or faster breathing to keep the carbon dioxide pressure in the blood below normal.
In newborns, ECMO is used to support or replace an infant's undeveloped or failing lungs by providing oxygen and removing carbon dioxide waste products so the lungs can rest.
A pump pushes the blood through an artificial membrane lung, where oxygen is added and carbon dioxide is removed.
Anemia-A lack of hemoglobin, the compound in blood that carries oxygen from the lungs throughout the body and brings waste carbon dioxide from the cells to the lungs, where it is released.
Sunburns may be avoided by the liberal use of a sunscreen containing either an opaque active ingredient such as zinc oxide or titanium dioxide or a nonopaque active ingredient such as PABA (para-aminobenzoic acid) or benzophenone.
Electrolyte levels will be measured along with carbon dioxide and pH and serum osmolality, which may indicate hypertonic dehydration.
Belli's anti-chloasma cream is an oil-free sunscreen containing titanium dioxide and zinc oxide to block UVA and UVB rays.
A stabilized oxygen formula of 28 percent sodium chlorite in distilled water, MMR produces chlorine dioxide when mixed with lemon juice or citric acid.
According to a study found on PubMed, sodium dioxide has been shown to be relatively harmless when used in small amounts, but questions were raised about the possible effects of using larger doses over extended periods of time.
Sodium chlorite and sodium dioxide are listed by the Department of Health and Human Services as toxic substances.
In fact, tips for reducing exposure to sodium chlorite and sodium dioxide are featured.
Other ingredients include potato starch, gelatin, and silicon dioxide.
Chemical vapor deposition is another method to create black or gray diamonds - carbon dioxide is injected into plasma and the resulting crystals may have a black hue.
For example, manufacturing of one kilogram of PET involves releasing 40 grams of hydrocarbons, 25 grams of sulfur oxides, 18 grams of carbon monoxide, 20 grams of nitrogen oxides, and 2.3 kilograms of carbon dioxide.
Manufacturers make sunscreens with zinc oxide or titanium dioxide just for children.
For whitening purposes, titanium dioxide may be used to create a softer tone.
It purges the body of carbon dioxide, oxygenates the blood, and promotes relaxation.
While all melt and pour soaps start out transparent, sometimes titanium dioxide has been added to the soap base to make it opaque.
It is comprised of silicon dioxide and is used as an additive which absorbs excess liquid in some foods.
They estimate calories burned during exercise based on oxygen, carbon dioxide, and heat output generated during exercise.
Automobiles, on the other hand, are the second largest source of total carbon dioxide emissions.
Laser treatment for acne scars typically uses a combination of a carbon dioxide and an erbium laser.
As the ingredients react together, they release carbon dioxide, thus accounting for the innumerable bubbles released when the bomb hits the water.