How pseudomonas make selenium using selenate and hydrogen sulfide?
What is the chemical reaction that how is how the bacteria make Se0 using hydrogen sulfide H2S and selenate?
Case History: Kesterson National Wildlife Refuge Background Kesterson National Wildlife Refuge, California. In the San Joaquin Valley, irrigation water wasn't draining properly, and crops were dying in the water-logged soil. In 1981, a drainage system was built that would channel irrigation runoff into shallow ponds called Kesterson Reservoir. In addition to receiving field runoff, the new reservoir was to be a waterfowl habitat. In 1983, an unusually large number of dead birds was found, indicating… Read More
Can selenium sulfide be used in treatment for lice?
Selenium occurs naturally in a number of inorganic forms, including selenide, selenate, and selenite. In soils, selenium most often occurs in soluble forms such as selenate (analogous to sulfate), which are leached into rivers very easily by runoff. Selenium has a biological role, and it is found in organic compounds such as dimethyl selenide, selenomethionine, selenocysteine, and methylselenocysteine. In these compounds, selenium plays a role analogous to that of sulfur. Selenium is most commonly produced… Read More
No. the current formulation does not include selenium sulfide
Selenium is a naturally occurring substance that is toxic at high concentrations but is also a nutritionally essential element. Hydrogen selenide is the most acutely toxic selenium compound. Acute (short-term) exposure to elemental selenium, hydrogen selenide, and selenium dioxide by inhalation results primarily in respiratory effects, such as irritation of the mucous membranes, pulmonary edema, severe bronchitis, and bronchial pneumonia. Epidemiological studies of humans chronically (long-term) exposed to high levels of selenium in food and… Read More
Selenium sulfide is used against tinea capitis.
CANDID - TV is the brand name of shampoo containing Selenium sulfide in India. It is made by GLENMARK Laboratories.
Selenium is found in sulfide ores such as pyrite, where it partially replaces the sulfur.
Selsun Blue has selenium sulphide 1% and is available without prescription in US.
Yes. Hydrogen sulfide is extremely flammable.
The formula for hydrogen sulfide is H2S.
The chemical formula for hydrogen sulfide is H2S.
hydrogen sulfide is not hazardous
Hydrogen sulfide (H2S) is an inorganic compound.
hydrogen sulfide is covalently bonded.
there is covalent bond in hydrogen sulfide.
No, hydrogen sulfide is NOT minable, because it is gaseous, not mineral.
Hydrogen sulfide is H2S and has no metals. Both hydrogen and sulphur are non metals.
What type of reaction occures when a sample of the compound selenium sulfide which broke down into selenium and sulfur is heated?
This is a "decomposition" reaction.
Hydrogen Sulfide has a total of three atoms. Hydrogen has two, and Sulfur has one. H2S.
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Hydrogen sulfide, H2S has a molar mass of 34.08088g/mol.
Aluminium sulfide is Al2S3 and there is no hydrogen in it.
It is a physical change. This is so because no new substance is formed. Hydrogen Sulfide is Hydrogen Sulfide wether it is boiling, at room temperature, or freezing.
The density of hydrogen sulfide is greater than the density of air.
This is a bit tricky. Both Proteus vulgaris and Pseudomonas aeruginosa are Gram-negative and rod-shaped. According to Bergey's Manual of Systematic Bacteriology, Proteus vulgaris tests positive for sulfur reduction, urease production, tryptophan deaminase production, and indole production. Pseudomonas aeruginosa reduces sulfur and nitrate, and has a characteristic green color. The API 20E Identification System is a test strip that can be used to identify Proteus vulgaris versus other bacteria. An even easier way to test… Read More
Two hydrogen atoms can bond with one sulfur atom, making the formula H2S, also known as Hydrogen sulfide.
The chemical formula for hydrogen sulfide is H2S. There are two hydrogen atoms and one sulfur atom for a total of three atoms.
Each molecule of hydrogen sulfide contains two hydrogen atoms and one sulfur atom.
A hydrogen sulfide molecule, H2S, has a bent shape, similar to that of a water molecule.
Hydrogen Sulfide H2S is a colorless gas, so it looks like ordinary air.
there are 1.30e25 Hydrogen atoms in 2.70 mol Ammonium Sulfide
No: hydrogen sulfide is a gas at standard room temperature and pressure
Hydrogen and Sulfer.
Why is water a liquid at room temperature when all other other chemically similar substance are gases at room temperature?
Hdrogen bonding. The sulfur analog of water, H2O, is hydrogen sulfide, H2S. The selenium analog is hydrogen selenide, H2Se. Both of these are gases at room temperture and pressure. In these the there is no hydrogen bonding as the electronegativities of the S and Se atoms are too low.
Sodium thiosulfate is reduced to hydrogen sulfide and hydrogen sulfide react with an iron salt yielding typical black iron sulfide.
hydrogen sulfide. The term binary compound means one that contains only two elements, and all the others listed contain three elements.
H2S is hydrogen sulfide and sometimes called "bad egg" gas. ''Hydrogen sulphide'' or ''hydrogen sulfide'', depending on your local spelling conventions.
The formula for the compound Calcium Hydrogen Sulfide is Ca(HS)2. Ca = Calcium H = Hydrogen S = Sulfur
Yes, hydrogen sulfide (H2S) is a compound of a nonmetal and a nonmetal; therefore, it is covalently (molecular) bonded.
it is a problem hydrogen sulfide gas is poisonous and should not be inhaled and should be avoided as much as possible
I believe it is still called Hydrogen Sulfide, except that you would classify it as a Aqueous solution
Hydrogen sulfide is a polar covalent compound.
sodium sulfide is apparently made by generating hydrogen sulfide gas into a sodium hydroxide solution,and then adding an equivalent alkali. you would get sodium sulfide if you added an equivalent alkali to the solution.
This largely depends on the pressure and temperature that the Hydrogen Sulfide is at. However, at room temperature hydrogen sulfide is a gas. At normal pressure it condenses to liquid at -60 °C (boiling point) and solidifies at -80 °C (melting point).
Oxygen is a component of air (21 %) and of many oxides. Sulfur is a component of many sulfides, sulfates, hydrogen sulfide. Selenium are frequently associated with sulfur ores. Tellurium exist as tellurides, tellurites or tellurates but it is a rare element. Polonium exist in traces in uranium or thorium ores.
It is Hydrogen Sulfide
Because the smell is added so it can be detected. If natural gas smells like rotten eggs then it contains H2S or hydrogen sulfide. Actually the smell associated with rotten eggs is hydrogen sulfide, so hydrogen sulfide does not smell like rotten eggs, rotten eggs smell like hydrogen sulfide.
Noe, Hydrogen sulfide has two non-bonded pairs of electrons.