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copperastic
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[*] posted on 15-3-2014 at 10:33
URGENT QUICK RESPONSE


what are the proportions for zinc powder and copper oxide thermite?



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Mailinmypocket
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[*] posted on 15-3-2014 at 10:35


Urgent! Click here!
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copperastic
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[*] posted on 15-3-2014 at 10:38


thanks



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Ramiel
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[*] posted on 15-3-2014 at 21:02


You didn't even ask please... please use manners at least when asking for favours here.
I had a look at some of your previous posts and there seems to be a pattern. I think you would find it much better in the long run to search for your answers - better for you, better for us. If you still can't find what you're looking for, and you've made an effort to search, I think you'll find members on here will respect your effort and be happy to help. :)




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copperastic
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[*] posted on 16-3-2014 at 18:15


I'm sorry ramiel it was just that my dads friend was coming over so I had to prepare it quickly.



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Artemus Gordon
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[*] posted on 18-3-2014 at 16:27


Am I the only one who finds it alarming that copperastic is apparently performing thermite reactions but is not able to calculate the molar masses for Zn and CuO?
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HgDinis25
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[*] posted on 18-3-2014 at 16:33


Quote: Originally posted by Artemus Gordon  
Am I the only one who finds it alarming that copperastic is apparently performing thermite reactions but is not able to calculate the molar masses for Zn and CuO?


C'mon thermithes aren't as linear as simply calculating the stoichiometric amount of each reagents. There might be an excess of oxidizer or reductant, depending on the thermite process itself and the wanted outcome. He's new to chemistry but he knew when to ask something out of his reach. It's better than not asking at all and go guess the amounts...
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Artemus Gordon
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[*] posted on 18-3-2014 at 16:47


Well, if he had asked whether or not he should use an excess of oxidizer or of reducer it would have demonstrated that he at least understood the reaction. As things now stand, I'm not sure he does understand the reaction and maybe he should be encouraged to play with less energetic reactions until he does understand things better. I personally won't attempt thermite reactions until I have done many more experiments from books.
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copperastic
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[*] posted on 18-3-2014 at 16:51


HgDinis25 Im just not sure if thats what stoichemetric amounts are.



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Zyklon-A
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[*] posted on 18-3-2014 at 16:55


Exactly his point....
Look it up, or read any beginning chemistry textbook.




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copperastic
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[*] posted on 18-3-2014 at 16:55


Artemus Gordon I know about reducers ( like zinc) and oxidizers I just dont know what I should use. For example a long long time ago i though that in the equation 2H2+O2=2H2O i would need 2 grams of H2 and 1 gram of O2 but ive learned in a long time but im not sure with my self that it is instead (using the example) 2 moles of H2 and 1 mole of O2.



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copperastic
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[*] posted on 18-3-2014 at 16:59


Zyklonb Im reading the illustrated guide to home chemistry expirements and it has not mentioned Stoichemontary. I figured out that is was (back to hydrogen and oxygen reaction) moles from common sense.



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Artemus Gordon
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[*] posted on 18-3-2014 at 17:00


copperastic, you need to understand atomic masses and moles. To make H2O you need 2 times as many ATOMS of H as of O but those atoms have very different masses. Hydrogen has a mass of (approx.) 1 gram per mole, but oxygen masses 16 grams per mole. So you really need 16 grams of Oxygen to react with you 2 grams of Hydrogen.
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copperastic
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[*] posted on 18-3-2014 at 17:02


I said that in the post 2 above Gordon.



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Artemus Gordon
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[*] posted on 18-3-2014 at 17:08


Oh, OK, I didn't understand that. So do you know what the stoichiometric masses should be for your Zn/CuO thermite reaction?
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copperastic
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[*] posted on 18-3-2014 at 17:16


Yeah after i posted i did a little thinking then i realized uranium is much heavier than hydrogen so you would use moles.



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Artemus Gordon
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[*] posted on 18-3-2014 at 17:22


I assume you are being sarcastic. If you in fact know what you are doing with this thermite reaction, more power to you, but you came on here asking to be spoon-fed the recipe for a pretty vigorous reaction and it won't make amateur chemistry look good to the muggles if you burn your house down.

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copperastic
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[*] posted on 18-3-2014 at 17:27


no no no i just wasn't sure but then my dads friend (A biologist who knows chemistry) came and i asked him and he told me but i wasnt sure was i made the connection to the uranium and hydrogen weight difference.



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Artemus Gordon
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[*] posted on 18-3-2014 at 17:29


Oh, OK :D
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Antiswat
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[*] posted on 19-3-2014 at 07:10


copper oxide and zinc thermite ratios, guess this is my point of no return where i will have to make zinc metal powder thermite.. weird how all of these things that randomly pops into my mind comes back to me shortly after i have written them down after waking up with strange ideas in my head

guess zinc's melting point could affect burning rate a bit.. i think it will give a nicely green and weakly blue flame colour, could be quite spectacular i dark setting or confined in aluminium foil perhaps for added reaction speed




~25 drops = 1mL @dH2O viscocity - STP
Truth is ever growing - but without context theres barely any such.

https://en.wikipedia.org/wiki/Solubility_table
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copperastic
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[*] posted on 19-3-2014 at 13:33


yeah Antiswat when i did it and it didnt really work once in a while it flared up and also watch out the smoke coming of is zinc oxide powder.... I discovered that when my propane tank had a thing white layer of powder on it. I didn't breathe any in though.



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The Volatile Chemist
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[*] posted on 22-3-2014 at 19:48


Quote: Originally posted by Artemus Gordon  
Am I the only one who finds it alarming that copperastic is apparently performing thermite reactions but is not able to calculate the molar masses for Zn and CuO?

He's "Harmless" :)
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