Inorganic Chemistry

Hi guys..... i urgently need a damm gud chemistry project for my school assignment....... Recently i got a idea abt estimation of nickel content in food.......especially in chocolates...........but didn't get any methods to find so.......Do any one of u know....anyway to do this???>........i have to estimate the amount of nickel......or test the presence in excess in chocolate.....

guys ! help ...i have got a project ... "Milk Analysis " what do i do in that ? can any1 help and tell me what exactly i hve to do and how ...!!!

In this link: http://en.wikipedia.org/wiki/Quintuple_bond we see an example of Quintuple bonds, I was wondering what the hybridization of this would be?

I understand that copper(II) chloride reacts with copper metal in conc. HCl to eventually produce colourless [CuCl2]-. Can anyone tell me what is the role of copper in this reaction? I'm also wondering how do you get a balanced equation out of all that. Thanks much.

I want to make some sodium or calcium hypochlorite to do a luminescense demo with hydrogen peroxide. I've found out you can simply take NaOH and bubble chlorine through it and you get a mixture of HCl and NaOCl. this would be fine but I don't want the HCl, since mixing it with H2O2 is bound to give badness... perhaps I could bubble Chlorine through NaOH and then neutralise the solution with more NaOH? or just stop the reaction when it's neutral?

THIS MAKES NO SENSE. IT's like starting at Latin.. actually, latin makes more sense... does anyone know about molality, and figuring out all the different stuff, like the mole, and molar mass for this given question?: A 0.517-g sample of a nonvolatile solid solute dissolves in 15.0 g of t-butanol. The freezing point of the solution is 22.7ºC. a. What is the molality of the solute in the solution b, Calculate the molar mass of the solute. (BTW: t-butanol>> Freezing point = 25.5 C, Kf = ( (C*kg) / mole) = 9.1) If you can explain how you do it... pleeeassee. I have no idea how to do this.. The lab book doesn't tell us how, it just throws us numbe…

could u give me some information about syntesis tetraaminecopper sulfate monohydrate? especially if theryou have an report template coul u share it with me? its emergency can i find report template in this site?

Hello everybody, This is my first ever post on this site, and I am still a student, so correct me if any terminology I use is wrong. I won't take it personally. I'm attempting to synthesize ferrofluids for my chemistry class, and I'm looking for a good median to keep it in. I don;t have access to hydrophobic glass, and I want to keep it in something that won't get all mucked up with the residue ferrofluids tend to leave behind. Anny suggestions would be appreciated. Thanks in advance! -Spence

Ok i understand flash powder is more of a "bright light" type of effect, but i have also heard of people using it in place of black powder. So i'm just curious, whats the difference? Im guessing flash powder is not as loud as BP but brighter? Just kinda curious.

The question isssss...: A mixture of gases collected over water at 14ºC has a total pressure of 0.981 atm and occupies 55 mL. How many grams of water escaped into the vapor state? now at 14 C, water has a pressure of 12 torr, or 0.01279 atm. I did the ideal gas law equation for no (moles), using 0.981 atm, which came to be 0.0023 mole, if we X that by water's weight (18.01528 g/mole), it is 0.0413g. But this isn't right.. where is my mistake?. i Know that the pressure of water ^^^ has to be used somewhere, but I don't know how/where... dont worry about it, i got it. thanks anyway, i guess it was too hard for you to figure out.

How do you make ammonia from solid ammonium hydroxide?

i will like to make a little work out to be analysed. what appens when a mixture of soduim carbonate and sodium hydroxide is titrated against i mole of ferric solution i want to understand this concept if there can be any help

today while working in lab i got some strange results:- anions detected:- carbonate, bromide, phosphate cations:- arsenate (others have not been tested till now) i was going by vogel and passed H2S in acidified (with HNO3) soda extract of mixture given. arsenate was presipitated(deep yellow) and centrifugated. then ammonium molybadate was to be added in soda extract gained. first it was heated to remove H2S. as soon as molybedate was added instead of yellow (indication of phosphate) solution turned deep blue. what is now in the test tube?

I have some questions about finding masses or moles of certain compounds over water but i need a chart showing the pressure at certain temperatures. for example A student collects 41.1ml of oxygen gas at 737 torr and 25C by displacement of water. What amount in moles of oxygen is present in this sample? So i need the torr pressure at 25C I need a chart showing these pressure and temperatures but i cant find any on the web.

a mix of gases is collected over water at 14C (287.15Kelvin) and has a total pressure of .981 atm and occupies 55mL. How many grams of water escaped into the vapor state? Hint: What is the vapor Pressure of water? This has gotten me completely confused. n=PV/RT n=(.981*.055)/(.08206*287.15) This makes the molarity .0022897674 Since Molarity = Mol/G divide .0022897674 by 16 and you get 1.431104611 I know this isn't the answer. Where did i go wrong and why do i need the vapor pressure of water? Which btw is 12 mmHg, which is inevitably .0157894737 atm HELP! I'm going crazy over this question!

If methanol and H2SO4 react: 2 MeOH + H2SO2 → (Me)2SO4 + 2 H2O but then (Me)2SO4 reacts with water: H2O + (Me)2SO4 → H2SO4 Wouldn't this mean when the H2SO4 reacts with the methanol, that the methanol would produce dimethyl sulfate then react with the water and start the cycle again?

Now, now, hold fire on the jargon, please, I know NOTHING. But I have a gadget powered by batteries (it is a timer for an automatic garden irrigation system). The instruction manual enjoins me to use alkaline, non-rechargeable batteries. I am abjured from using any other sort on pain of .... well, pain. The manufacturer of the gadget has no financial stake in whatever battery supplier I choose, so I reluctantly conclude that that the advice is at face value. But to me, a volt is a volt is a volt. Just as a dollar, pound or penny loses the identity of its source once it is in my wallet, I do not expect an item of electronic equipment to be overly "concerned" …

Hi folks, I need (I think) some zinc oxide in a hurry, I've got zinc, I can get 3% peroxide solution, how effective would that be in oxidizing zinc? Is it a grind the zinc into it and come back next week kind of thing, or needs heat, or fairly rapid at room temperature, or even not worth bothering with with that low a concentration of peroxide? Is it likely to make a precipitate that can easily be retrieved with a coffee filter or will it be too fine? Then because I only have a small strip of pure zinc, and disemboweling batteries is messy, how rapidly would 3% solution, hot or cold attack steel? I'm thinking of course of retrieving it from galvanized nails or p…

the theoretical equation SeF4 + 4(CH3)3SiCN ---> Se(CN)4 + 4(CH3)3SiF is given. The product Se(CN)4 is not actually formed. The new compound actually formed has the % mass of Se(60.3) C(18.3) and N(21.4). I have determined the empirical formula to be SeC2N2 but then if (CH3)3SiF is also formed in the expected ratio, what is the actual balanced equation? (there is one more compound formed from the remaining elements)

Has anyone here ever demonstrated the thermite reaction using any other metal besides iron oxide? I'd like to try this reaction using at least three oxides. wikipedia states that it is possible with Cr2O3 and CuO...

Can someone tell me a good method to make iodine and bromine..... with potassium iodine and potassium bromide

In a solution with both BrO3- and Br-, does anyone know how to reduce the BrO3- to Br- without oxidising the pre-existing Br- to Br2? Also, only potassium ions can be introduced into the solution. My first thought is, to use hydrogen peroxide or potassium permanganate, but I believe this would oxidise the Br- to Br2. Does anyone have any ideas?

how silicon nanoparticels which the average particle size is about 50nm used in semiconductors or other electronic materials

zirconium carbide nanoparticle is a very important and new high temperature structrual material, but its importance is being conducted in some fields, containing the chemical, alloy and the aerospace fields.

Can anyone help me to get maximum hydrogen from ammonia. Which is best and cheapest method if its electroysis how to do it and which electrodes i guess if my equation can really work in real nh3 + 2h2o + koh = kno3 + 4h2(gas) electrolysis of ammonia mixed in water and koh added to it plz help me out with my maximum yield for hydrogen.