Inorganic Chemistry

Can anyone help me by sharing info on fabrication of gas sensors using indium nitride

Oxygen and carbon have double covalent bonds. Are these bonds of equal strength? (as the number of bonds are the same) Please advise. Thanks in advance.

This question is translated from Chinese so forgive he possible bad wording. Also the question may not make sense, if this is so, please tell me. At 0C mercury in a barometer reaches 760mm. Upon changing the pressure, 3ml of air enters the tube of the barometer causing the mercury level to drop to 570mm. Calculate the volume of air that occupies the barometer. I have no idea where to begin wih this question, it was hard enough translating it. If you think it doesnt make sense and have a suggestion of what they might be trying to ask then please go ahead. Any help at all will be great. Thanks 在0C时气压计内汞柱高760mm, 在该压力时，通空气3ml入管内汞柱降至570mm,求这时空气在气压计内所占体积. If by an…

Hello, FYI, I used white rice husk ash as a silica source for my aerogel. For supercritical drying, I add 6 litre of absolute ethanol for 1.5 litre of ethanol-soaked alcogel in the drying chamber. The temperature and final pressure of the drying process is around 275 degree C and 1400 psi. I have done this several times, and the results are WHITE aerogel powder (attached image). Although the powder is white, it still shows some basic properties of aerogel such as low density, hydrophobic .. however, I just want to know if there any method to change the color of my aerogel powder? Thanks in advance.

I want to know what kind of fluorescent pigment in the fluorescence lamp. And whether it is the same as the ultraviolet lamp? Thank you.

Hi, what are the oxidation numbers of NaNi(IO6)? Ni is supposed to get the oxidation number +IV I hope someone can help me.

If I dissolve copper sulfate in H2o or water then apply a drop to common salt will it during the time of transition dissolving the salt bond with ions transvalecing to the green spectrum now become cooper chloide?

Is sodium chloride considered aqueous? I'm kind of new to chemistry, and from what I know, aqueous means something is readily dissolved in water. Does this mean it is both a solid and aqueous? I'm guessing yes, but this wouldn't look right: NaCl (s) (aq) Thanks.

Hey folks, thanks for reading my post. I am a programmer and I've taken it upon myself to create and interactive periodic table of elements (see it at myatomicplayground.com). It's fun, demonstrates what can be done with programming, and ultimately will make the periodic table of elements available in many different formats, specifically XML, CSV, HTML, visual and portable versions for smart devices. (I compiled the data myself - there doesn't seem to be a comprehensive, data-intensive version in a format that lends itself to programmers like me) I think I need help with it. I'm not stalled by any means, it's just that it turns out to be a gigantic undertaking, and a know…

the water of mass 75g at 100 deg C is added to ice of mass 20g at 15 deg C. What is the approx. resulting temperature?

Hello SF i hope you can help me How can i reduce Nickel(II) oxide to Nickel? Can i make this with a home lab? Please give me an example with 10g NiO Thanks!

Between the Mohs, Brinell, Vickers, and all the other forms of hardness. Along with the lists of each not having every element I am having a real hard time determining the actual hardness of materials. I am designing a game which uses the periodic table to build everything and would like it to reflect the real world as much as possible. The two stats I am trying to figure out for elements it makes sense for(not gases etc) are Hit Points(hardness) and Damage Resistance(Yield Strength), while Yield Strength is not that difficult I am really having trouble with the Hardness. Does anyone have any suggestions(books, charts, or calculations)?

http://en.wikipedia.org/wiki/Energy_density This wiki page says the "specific energy" of Hydrogen is 123. What is the specific energy of all the elements on the periodic table? It also says the energy density of Hydrogen gas is 0.01005. What is the most dense you will find Hydrogen in the largest possible gas giant(just before it would be considered a brown dwarf star? If your able to answer this for all the gases on the periodic table, even better. http://www.periodictable.com/Properties/A/Density.html This page says the density of Titanium is 4.507, it also says the density of Carbon in graphite form is 2.26 while the density of diamond(also carbon) is 3500.…

In solar panel, solar cells are made of from silicon-based material, when the beams of sunlight strike on photovoltaic cells; the silicon-based material is called semiconductor which converts sunlight to electric energy. Actually, in a solar PV sunlight falls on a thin layer of silicon which dislocates electrons in the thin semiconductor creating a flow of electron (electric current). I want to ask what is the mechanism of this process ??? Thanks a lot,

Any one please answer me while working in lab which common chemicals should not be mixed?A few days ago my class mate was working with some chemicals in the lab.At once there was an explosion in the beaker.It was terrifying. So I want to ask that which common chemicals e.g, NaOH,CasO4 etc. should not be mixed? Thanks

In solar panel, solar cells are made of from silicon-based material, when the beams of sunlight strike on photovoltaic cells; the silicon-based material is called semiconductor which converts sunlight to electric energy. Actually, in a solar PV sunlight falls on a thin layer of silicon which dislocates electrons in the thin semiconductor creating a flow of electron (electric current). I want to ask what is the mechanism of this process ??? Thanks a lot,

The solution which resists to change its pH is called Buffer Solution. The resistance to change in pH on the addition of small amount of acid or base is called Buffer Action. The amount of acid or alkali required to change to produce unit change of pH in the solution is called the Buffer Capacity of the solution. Our blood is the buffer solution and its pH is 7.3 .

pH plays essential role in the field of chemistry as well as biology. Other areas in which pH information and control is necessary, including water treatment, soil conditioning, swimming pool managements, corrosion control, food processing and electroplating. For example: The pH of human blood is normally maintained by the body between 7.35 and 7.45. If the pH drops to 7, as in the illness, the patient may go into coma, if the pH drops to below 6, death may occur. pH rises as high as 7.7 or 7.8 causes diabetes excess vomiting, diarrhea. The soil having pH above 10 or below is sterile.

Atomic hydrogen is used to produce atomic hydrogen torch to attain the temperature of 4000 – 50000C which is employed in welding aluminum alloys, high chromium and nickel steels. It is based on the fact that when a jet of hydrogen is passed through an electric arc set up between the tungsten rods atomic hydrogen is produced which at once recombine to give a flame having a temperature between 4000 – 50000C. The heat is not producing by burning of hydrogen but from recombination of hydrogen atoms. H + H → H2 + 104 K.cal/mole

Chlorine reacts with water to form hydrochloric acid and hypochlorous acid. In this reaction, chlorine oxidizes as well reduces hence it is known as self or auto oxidation-reduction reaction. Cl2 + H2O → HCl + HOCl Solution of chlorine in water is strong oxidizing agent and in this solution HOCl usually acts as oxidizing agent. This is because in HOCl, chlorine has an oxidation number is +1 and has a strong attraction for electrons. The bleaching action of chlorine is also due to same reason, i.e first of all chlorine forms hypochlorous acid ( HOCl ) with water which then oxidizes coloured compound.

Ok I was trying to come up with a balanced equation for the reaction between KNO3 and sucrose, C12H22O11. I think I figured out the relative amounts of reactants by using the generally accepted ratio (by weight) of 3 KNO3 to 2 Sucrose. 4 C12H22O11 + 9 KNO3 --> ? Or, if this is better; 8 C12H22O11 + 18 KNO3 --> ? I did some thinking as to possible products, and here's my best guess: 8 C12H22O11 + 18 KNO3 --> 87 C + 88 H2O + 18 KNO2 + 9CO2 My idea was that the H and O atoms from sucrose form water, leaving elemental carbon, some of which combines with oxygen from the decomposition of the KNO3, leaving KNO2. I considered NO2 as a prod…

When molten sulphur is heated up to boiling and then poured with a thin stream into cold water, it turns into elastic rubber like material which is called plastic sulphur. It is soft, sticky rubber like material. It on standing, is converted into opaque brittle sold containing some rhombic sulphur. The plastic sulphur is composed of long chins of sulphur atoms coiled up. The elasticity is due to uncoiling of long sulphur chains and then recoiling of chains by release of tension ( stress ).

If you know ,please let me know . Thank you. sorry Al does not react with nitric acid ??? Reason

Please reply , thank you

Ordinary hydrogen exists as diatomic molecule (H2), therefore, it is also called as molecular hydrogen. The two atoms in a molecule of hydrogen are held together by a shared pair of electrons known as covalent bond having very high bond energy (104 K.cal/mole). The molecules are very stable and dissociate into atoms under extreme conditions. The product obtained as a result of dissociation of molecular hydrogen is known as atomic hydrogen. These atoms have very short life and quickly combine together to form molecules again. The hydrogen set free at the time of its preparation from its compounds is also in atom from and is commonly known nascent hydrogen. The newly b…