Inorganic Chemistry

I`ve bought a Novelty lighter off eBay, it has 3 setting, one is a normal flame the sort found on a coventional cig lighter the other is a Green color flame and that`s basicly a drop of Copper metal on a platinum wire across jet. but it does a bright red flame too, as good as any Strontium salt would and when mixed with the blue jet the color`s Very vivid. the element across the jet looks like a small ring suspended in 3 places to the nozzel chassis. it appears metalic, but what`s it made from???? the fuel is ordinary Butane lighter gas.

Hey, let me preface this by acknowleding that this information is probably somewhere on the internet, but if one of you has a good, quick reference I would love to know the equilibrium dissociation constant for distilling KNO3 and H2SO4 (the final value at STP would be great). I am obviously making my own nitric acid. It is for my final in chemistry, hence my hurriedness. Additionally, any tips you might have are welcomed. P.S. I know there is a thread on this, it wasn't helpful. It was actually frustrating. . . but i guess thats what happens when you're used to your science coming from a finely written book rather than a post written in the usual internet fashion. …

I understand the reason why sulphur is used in so many fireworks, flash powders etc is because it increases sensitivity and lowers activation energy to make essentially easier to light mixtures, but why is this? Does the sulphur act as a reductant or is it the sulphur compounds formed that give rise to this effect?

Are there ANY experiments possible using the silica in the dehumidifiers found in food packages?

Hey there Just wondering if anyone can help me,I've had a question about work function of a metal with a certain wavelength and velocity given but no mass of electron,can this be done??? Cheers Beula P.S anyone into forensic science?

Hi, I'm studying Chemistry AS level and I was wondering if anyone could explain redox reactions and the whole method of getting half equations from whole equations and vice versa. I'd be really greatful if you could help, thanks people...

Can anyone help me on this? I'm looking for a site that explains the chemical compsitions of metallic meteorites right down to the rare earths occuring in a few ppm. I've visited some great sites about this subject a few years ago, but now I cant find them. I posted this on the astronomy forum without any result - hope you people might help! Best regards, Michael

I've just been studying converting carbon dioxide to carbon monoxide, by heating carbon through a current of CO2. What I can't understand is how reducing the ratio of oxygen to carbon, somehow makes a deadly gas. Sorry is this is a stupid question. I can't remember hardly any chemistry I learnt at school, and I've only just started studying the subject again over the last couple of days.

Anyone got any advice on solving equilibrium problems with Le Chatliers principle... also any explanations of shifts in eqiulibrium reactions would be greatly apprecaited!

I was just watching a PBS documentary and they stated that the approximent effeciency of electrolysis (changing water into hydrogen and oxygen) was about 1.3. I guess that would mean it takes 1.3 watts of electricity to yield 1 watt of hydrogen if it is burned. Meaning after the hydrogen is burned you get your 1 watt of energy back plus the original water. So far all this makes sense to me. Then the program went on to say that the photolysis process nature does in leaves is much more effecient but that so far, no one can duplicate this process to manufacture hydrogen directly. But if a break through comes in this photolysis it would solve the energy crises mank…

what would be a way to make some small firework sized explosives (legal where I'm from) using simple methods and chemicals? probably even just some chemicals that make cool effects when mixed? (gas, colors etc.) if any of this is illegal to answer/post please delete and sorry for the problem. -EDIT- please move to applied chemistry, sorry for the mistake.

Hi I must be a bit of an amateur on chemistry, but I have one question. Sometimes in the shower, water at 50degrees celcius produces steam. How is this possible when steam is 100 degrees celcius water, and the water in the shower is half that temperature?? bonnie

hey I'm a teenage kid and dont know a lot of what I'm talking about or where to ask but... how do I tell how much/big 5 grams of gallium would be? I want to buy some but not if its not as big as I'm thinking.

What's the meaning of "proof" when it comes to alcohol? I thought it meant percentage of alcohol but then read something that said 150 proof. So what does it mean?

Could SZn be used as paint, mixed in some clear base to be applied onto walls to provide some glow from its luminiscent properties ? Has it been done?

What are some Potassium Oxidizers?

I seem to have done something pretty stupid by making a bet with a friend with a lemon eating contest... but anyways, is there a buffer or base I could coat my tongue/teeth that's relatively benign to reduce the acidity of lemons? Lemons are 5% Citric Acid with a pH of around 2-3.. problem with citric acid is that dissociates 3 times.. I'm not sure how this will affect the neutralization reactions if i'm going to add a base to it

Would a drawing of the electrolysis of NaF(l) have two Pt electrodes at the anode and cathode? We used carbon in the labs.. How much of a difference does using a Pt electrode have over a carbon one? Also i'm trying to figure out OVERPOTENTIAL, but i don't understand it (i dont think my book explains it very well). For example, the overpotential for the discharge of H2(g) at a mercury cathode is about 1.5V, but if the reduction of Na+ is still 2.71V, why is Na(s) being produced? Or does the Eo of Na+/Na change with the addition of a mercury cathode? Where does the mercury play a part in these transformations??

KNO3 when mixed with H2O produces what? :confused: :eek:

Is it possible to create a flash simlar to the ones in the flashbang grenades? Wiki says: "The filler consists of about 4.5 grams of a pyrotechnic metal-oxidant mix of magnesium and ammonium perchlorate."

I can't find any chemistry suppliers. Can someone help me. I live in Los Angeles so if theres one there that would be great and I like buy 4 or 5 test tube not a billon.

A Have Some Plant Food And I Want To Purify It. I Want Potassium Nitrate and Ammonium Nitrate. The Plant Food Parts Are: Total Nitrogen (N).................18% 1.4% Ammonium Nitrogen 2.6% Nitrate Nitrogen 14% Urea Nitrogen Available Phosphate (P2O2)....18% Solube Potash (KO2)..............21% Magnesium (Mg) (Total) .50% Water Solube Magnesium (Mg) Copper (Cu).........................0.05% .05% Water Solube Copper (Cu) Iron (Fe)..............................0.10% .10% Chelated Iron (Fe) Manganese (Mn)....................0.05% .05% Chelated Manganese (Mn) Zinc (Zn) .05% Water Solube Zinc (Zn) Derived From Ammonium Sulfate…

can someone explain Gibb’s Free Energy and how it is applied and it's relation and changes to entropy... thanks!

Hey, for a chem lab I have to design an experiment to detect the concentration of flouride in a mouth wash, or toothpaste... I've been thinking, perhaps I can do a titration to detect the presence of flouride and maybe use spectographic analysis to determine the concentration. Or perhaps I can set up an electrochemical cell and measure the voltage, like in this page: http://chemweb.chem.uconn.edu/teaching/chem-232/Laboratory_Manual/GA8_ISE_toothpaste_rev7_99.pdf (except I doubt I'll have the necesary equipment for this exact procedure) Do any of these ideas sound feasible?

What's the difference between these two? Other than the equations, when do you know when to use Molality and when to use Molarity?