encipher

Hi, My sister is going to graduate in a few weeks and a couple of my friends an I plan on throwing them a graduation party. Part of this party is pyrotechnics (of course ). Now one of her friends requested an exploision. There are many different ways of making things explode.. but I figured if I'm gonna blow something up, why not make it spectacular. What I want is the type of explosion that is very 'firey'. Not just a dry 'bang'.. now the main problem is this: I do not want to use any volatile substances.. no gasoline or pretty much any hydrocarbon. I want it to be as safe for them as possible.. of course its never really safe when dealing with these kinds of things, but I try to do my best. Anyways.. this a picture I got off google: http://www.firestock.com/FR40.jpg That the type of explosion I'm looking to make. On a much smaller scale of course. thanks

What is mean by gimp on that link woelen? The only gimp i know is the image editing software =D

I don't do JAVA or VB.. but I do work with the WinAPI alot. A project like this would probably be best made in C/C++.. but since you are limited to VB or JAVA, I'd say VB is the way to go. 1. For the SD Card detection, you would need to research the following API's: GetDriveType - To get the type of drive inserted (i.e. if its a removable drive or sd card) CreateFile - To open the drive for the next step DeviceIoControl - To get the properties of the drive.. drive letter It's not a very simple task, although if you were going to do it in C or C++ there would be sample code avaliable and I could help you out. 2. For image display, I would do one of two things: use an external application to edit / view images. You application can launch the process using CreateProcess API and try finding a program which can accept parameters so your images are loaded in automatically. Second thing to do if you want to embed images would be to use GDI+. Now i don't know if VB works the same way as C/C++.. but it probably uses the same api =\ 3. For CD burning you can embed two executables as resources: cdrecord.exe and mkisofs.exe both are open source. You can then extract then when needed during burning and use them to burn the cd you want. You can also monitor their progress and display it on your program though a progress bar.. etc.. To extract the exes from rousouce you can use FindResource, LoadResource, LockResource, SizeofResource and CreateFile. I know this isn't much help since It's all based off C++ methods. But hopefully it would have pointed you in the right direction.

I don't want to agrue or anything, but you cant compare nitroglycerin medications with KIO3 medications either. There is less than 1% of nitro that can be in your body at one time (meaning probably less in the actual medicine) as opposed to a bottle containing 200 tablets of solid KIO3. Mabe it wasn't the best comparison in the world, but it certianly isnt 'dumb'.

Yeah, i agree.. better safe than sorry. Buuut.. only one way to REALLY find out =D Just kidding. I see what MSDS says, I'm just telling you what I've had experience with. Mabe it requires more heat than what I gave it. Oh yeah, and Potassium iodate is commonly used (alongside KI) as an anti-radation pill. I doubt if it were really that shock sensitve they would be selling it as pills...

I used sodium/potassium iodate quite frequently with landolt reactions (iodine clock reactions). I would sometimes raise the temperature of the solution to a boil before carrying out the experiment. MY experience with iodate tells me its pretty stable, and I'm pretty damn sure it's not that 'shock sensitive' or else i wouldnt be alive

Is it possible to make sodium iodate this way? Do you know of a good pocedure for making sodium iodate and purify it? (sorry if my question is a bit off topic)

I dont quite understand your need for system wide hooks. Although they may be useful, it should be the last approach when tackling a problem. What exactly do you want to acheive.. there's a whole set of functions that deal with detecting changes in files, etc.. that are free of any hooks (At least none that you deal with). FindFirstChangeNotification http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/fs/findfirstchangenotification.asp regards encipher

My personal opinion would be to start off by learning C (If you haven't already). Going straight to a managed language in my opinion is not the best choice. There's alot of things done automatically by the .NET framework that you will miss out on. It would be best to know how everything works, how allocation & garbage collection works too. Going straight to C# will probably start some bad programming habits. But back to your question. No, C# is a fairly easy language. You have to know the concept of OOP though (object oriented programming). http://www.codeguru.com and http://www.codeproject.com have very good resources for several languages including C#

What did you think this program was? This application is adware which is going to probably give you a big headache soon with popups and bogus search results. You shouldn't install or even execute anything that you aren't fully aware of.

Yeah of course SkepticLance, I'm just talking about the stuff you commonly see in movies, or hear about from other people: "he touched acid and his finger dissolved.. etc.." or in movies when people spill nitric acid all over the floor and the bad guys get 'eaten alive' .

I myself (thank god) never had an accident with acids. So I started wondering how bad an acid burn 'burns'... Well, to satisfy my curiosity i dunked my finger in 6M Sulfuric acid. Not the smartest thing to do I know, but I was curious. To my surprise I felt nothing. Now I know if I left it on my finger for a while that won't be a good idea. So I wiped it off on my lab coat. Well, right now and hour later my finger is fine and I'm typing this post. My question is just HOW concentrated does an acid have to be for it to start burning almost immediately. (Now I know if I try this with 18M Sulfuric acid I will probably end up losing a finger or somehthing but I'm just wondering what the minimum is.. ) Oh, and please.. no one try this. It was stupid and foolish of me to do this. If this post violates any SFN rules or regulations please delete it. Thanks

Hi, Can you be more descriptive about what you saw? I've never seen porcelain react with anything I mixed in it so thats quite odd (at least in my experience). Are you sure it isn't residue from the combustion? On some surfaces it can be quite difficult to get charcoal out. Also, the material you burned being of vegetable orgin probably means its a hydrocarbon of some sort. If you give us more info on what you did mabe someone can find out what happened.

You can't use Le Chatelier's principle to actually SOLVE equilibrium problems. What the Le Chatelier principle does is predict which direction the equilibrium will shift to. For example: 2NOCl <---> 2NO Cl2 If the pressure on the system increased, which direction would this equilibrium shift to? According to Le Chatelier's principle, if a change is imposed on a system at equilibrium , the position of the equilibrium willl shift in a direction that tends to reduce that change. In this case, the equilibrium will shift to the left because there are less particles of NOCl then there are NO and Cl2. Another good example would be a flask filled with NO2 equilibrium expression: 2 NO2 (g) <=> N2O4 (g) + Heat If you cool down the flask it turns pale/light colored forming N2O4. if you heat it up you get a deep reddish brown color NO2.

Well, Like i said above.. in order to get HCl as a gas, you need concentrated HCl liquid. In a 38% solution of HCl, the liquid boils at 48 degrees celcius. Of course the gas escapes before that (you will see relatively thick fumes at room temperature). Collect that gas and now you have HCl. As for Hexane.. I would heat it up and collect it as a gas too. That's all I know really. Hope this helps

What is your setup.. Conc. hcl hives of hcl fumes which were good for simple diffusion labs. As for hexane it boils at 69 degrees celcius.. asuming you can change temperature you can get gaseous hexane too..

University of Florida . (actually it wasnt ufl.. wasnt wearing my glasses) here's the URL: http://www.staff.ncl.ac.uk/a.j.fletcher/isotherms.htm

Well, I found this in a document on UFL's site: The B.E.T. theory is based on several assumptions: i) adsorbent consists of a regular array of adsorption sites equal in energy, with a constant enthalpy of adsorption in the monolayer, DHA ii) adsorption is localised to these sites iii) neighbouring adsorbed molecules do not interact iv) multilayer formation is unlimited v) enthalpy of adsorption in second and subsequent multilayers is equal to the enthalpy of liquefaction, DHL vi) adsorption or desorption may only occur on or from exposed sites.

I don't quite recall the fourth.. i beleive there are only 4... not 5. At least i dont remember a fifth. Anyways the forth has to do with the formation of layers.. but i dont remember. Should've paid more attention in class =\

I think i can recall a few: 1. That the adsorbed molecules stay put 2. That the energy of absorbtion is the same for all layers except the first. 3. That the enthalpy of adsorbtion is the same for all the layers. If i remember any others Ill post.

Sodium Cyanide = 49.01g mol-1 so 10.9/49.01 = .02224 in reaction. 10.9 divided by 49.01 is not .02224 its .2184

My bad, didn't read the question carefully =\

I beleive red phosphorus is insoluble in anything, but it's pretty stable (other than the toxic fumes of course =D ). I guess I'd store it under water like white phosphorus.

The mix is 60% KNO3 and 40% Sugar. However it can vary depending on what you want it to be like. Please do not attempt to make this if you don't know what you are doing or you aren't too good at following safety guidlines. If heated too much the mixture can ignite and cause a big mess.