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[w00t]

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Posts posted by [w00t]

  1. Im in my first year in university

    i have to write a report 10 page report on

     

    "methods and technologies used for geochemical exploration using stream sediment and soil sample"

     

    call me retarded but i dont exactly know what the question is asking or how to answer it

     

    am i suppose to basically display and write about methods on how we explore/study sediments from stream lines, such as lakes running off mountains and such and how their are different methods for different depths of the water bed to find different sediments?

     

    i guess the soil sample is also refering to how we do a chemical anaylsis of the soil, what we find at differnt depths, how we identify it

     

    am i on the right track?

     

    any help is appreciated

     

    thankyou

  2. Nice result! :)

     

    I tend to find most of the times I`ve tried this' date=' my cotton just ends up dissolving into a sludge within seconds, other times I get a product that looks similar to yours but burns like ordinary cotton.

     

    I`ve had reasonable luck with unbleached Filter paper in the past though.

     

    it might be a neat second step to dissolve it in acetone and then evap, leaving a pure product, or find a way to Spray it out and evap as it falls leaving an NC powder.[/quote']

     

     

    ahh it turns to a sludge because sulfuric acid starts eating away cotton and changes the structure i think.

     

    i get the samething, i also get a product that looks like what i started out with and burns the same way if not worst

  3. actualy I HAVE heard instances of folks adding Calcium X to regular thermit mix (al fe types)' date=' but I don`t know it it was the Oxide, Hyrdoxide or maybe even the carbonate?

    Plaster of Paris was mentioned, so it`s probably That stuff, and don`t ask me Why they added it, I never got an answer!?[/quote']

     

    i think its Calcium sulfate ( plasters of paris ) used to make thermite in to a paste or something

  4. I think cobalt nitrate is made like every other nitrate, mix nitric acid with the elemental metal or carbonate, hydroxide, oxide compounds.

     

    i think razor blade is made from cobalt, drop it in to nitric acid see what happens

     

     

    (cobalt salts r carcinogen)

  5. what you need is 13-0-46 fertilizer which is KNO3, seeing you probably live in USA, you can probably buy a 25kg bag from any plant store lol.

     

    29-3-4, its nitrogen, phosporus, potassium, you can not use it

  6. nah could be impurities in the silver disks tho, how much no2 gas evolved exaclly.

    no you dont need to see the doctor, did you actually feel the no2 gas go in?

     

    i highly doubt there would be a large no2 gas forming being enough to kill you. only worry if you have your face over gas and breathing everything in.

     

    but it wont hurt to go to the doctor, i breathed in no2 gas before. i feel better then ever.

  7. I think it had something to do with it being warm, cuz after a while it went back normal (i dont treat my crap with oil )

     

    when i attached the second set of resistors. it went much hotter then just using one set, by hot i mean more then just hand burning hot. i reckon a minute on a paper will light it on fire. (also i could see a line of gas going up a metre above the beaker)

     

    so i put another heatsink and stuck a fan over it :)

     

    edit- if i stuck 10 in parallel, thats like 2.2ohms of resistance, so that would be ~5.45a if what i learnt in physics is correct... would that setup work? wouldnt 5a take like 2-3x quicker to complete its job?

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