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IrC
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Posting this here as I honestly have no idea where it should go, and it is a question. Namely, what can anyone tell me about this actual patent
application (meaning yes it exists), does anyone think it has validity. Found it browsing patents related to electromagnetic heating of the
ionosphere.
Infinite speed space communications using information globes
http://www.freepatentsonline.com/y2002/0013139.html
Attachment: US20020013139A1.pdf (324kB)
This file has been downloaded 456 times
This is the most oddly written patent I have ever seen. Referencing books on the history of Tesla among other deviations from what I am used to. Seems
he is basing principles upon what I can only view as the type of quantum correlation one thinks of when trying to understand the subject of Bells
Inequality, among other principles one would consider when studying the more esoteric subjects in physics. I have not found anything even remotely
similar being accepted and listed in search indices at the USPTO before.
[Edited on 3-4-2014 by IrC]
"Science is the belief in the ignorance of the experts" Richard Feynman
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Panache
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Mood: Instead of being my deliverance, she had a resemblance to a Kat named Frankenstein
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Chemical Engineering Assumptions
Question Prologue
I have long gone by the assumption that vessels and associated piping etc designed to withstand pressure of any reasonable degree (~100psi-ish) can
withstand full vacuum (well like 75torr).
This assumption generally holds also for o-ring seals and flanged seals, but I tend to decide upon it on a seal by seal basis (some seals to perform
require fish).
Actual Question
Is this assumption generally safe and valid?
(The reason I ask is I was curious as to what would happen if I place a full bottle of liquid CO2 into my ultra-low freezer at -85. Liquid CO2 has a
density half that of the solid and I was concerned regarding the integrity of the cylinder. I have since decided there was no real reason for doing it
but it made me realise I have never questioned this assumption)
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Metacelsus
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Atmospheric pressure is ~14 psi. I think your assumption is valid.
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HeYBrO
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Edit: Posted in wrong thread. Admin delete post please
[Edited on 8-3-2014 by HeYBrO]
[Edited on 8-3-2014 by HeYBrO]
[Edited on 8-3-2014 by HeYBrO]
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DubaiAmateurRocketry
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How do I calculate the acidity/basicity, or if a compound can be protonated or not?
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Metacelsus
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MOPAC will give pKa values.
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bismuthate
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How could Cr2O3 be oxidized to CrO3?
P.S. Somehow it ssems to me that this would be easy to find but I found nothing. Is this possible? Sorry if it's a stupid question.
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learningChem
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iron + copper sulfate ---> copper + iron sulfate.
Should
aluminium + iron sulfate ---> iron + aluminium sulfate
work? I tried the reaction but apparently it doesn't work. Is it because aluminium and iron are too close in the series?
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MrHomeScientist
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Based on the electrochemical series that should work. Aluminum forms a protective oxide layer that may prevent reaction, though. Copper chloride seems
good at getting through this, but to avoid contamination of your iron I'd advise a quick dip in dilute hydrochloric acid until bubbles just start to
form, then immediately immerse in your iron solution.
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learningChem
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Thanks MHS. I tried the HCl trick but it doesn't seem to help... - Puzzled.
[Edited on 13-3-2014 by learningChem]
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Metacelsus
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When an iodide salt reacts with concentrated sulfuric acid, is the acid reduced to sulfur dioxide, elemental sulfur, or hydrogen sulfide?
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HgDinis25
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Quote: Originally posted by Cheddite Cheese  | | When an iodide salt reacts with concentrated sulfuric acid, is the acid reduced to sulfur dioxide, elemental sulfur, or hydrogen sulfide?
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Becaude iodide ion is a strong reducing agent, it can reduce the sulfate ion (SO4) into SO2, then to H2S and even elemental sulfur. So, to answer your
question you get a mix of reactions happening at the same time. Because of iodide's reducing power, you'll get mostly H2S and some SO2. It would take
even more reducing power to go all the way to elemental sulfur, but tiny quantities may be formed.
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DraconicAcid
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| Quote: Originally posted by bismuthate | How could Cr2O3 be oxidized to CrO3?
P.S. Somehow it ssems to me that this would be easy to find but I found nothing. Is this possible? Sorry if it's a stupid question.
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Not directly, but chromium(III) salts can be oxidized to chromate in basic solution with peroxide. Chromate can probably be converted to
CrO3 with sufficient conc. sulphuric acid.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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Zyklon-A
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Molten Li vs. glass
Months ago, my torch broke. Yesterday I finally got a new one, and since then I have been busy ampuleing most of my element collection. I tried
putting the lithium in an ampule inside a desiccator bag, but it was much too difficult. So I just took it out of my vial, ripped it into little
chunks and put it in the ampule. Sealing the ampule was a breeze, and it is sealed in dry CO2.
I know Li reacts with glass when molten, but how fast? It is covered with the black LiN3 and looks nothing like a metal. Would it be safe
to melt it just a little, and then cool it down quickly? Or would it dissolve the glass to fast? Or would it explode? 2 LiN3 → 2 Li +
3N2.
Thanks.
[edit] just realized, Li doesn't react to form LiN3, but rather Li3N. Which isn't an azide, and doesn't explode.
[Edited on 19-3-2014 by Zyklonb]
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bismuthate
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Here's a (possibley usefull) video.
http://www.youtube.com/watch?v=cFGejaYqM-c
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Zyklon-A
International Hazard
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Damn, that's more violent than I thought.... But with powdered glass and powdered lithium the surface area increase certainly makes a big difference.
Doesn't quite answer my question though, but thanks.
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S.C. Wack
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from
http://www.sciencemadness.org/talk/viewthread.php?tid=20125&...
"On numerous occasions, several of these extruded pieces were melted together in mineral oil, then pipetted into glass tubing to give pieces weighing
several grams. In some cases the glass tubes were sealed off and in others the pieces of metal were removed into containers filled with oil (Figure
4). Both types of containers have kept the lithium shiny for over two years."
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Zyklon-A
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Thanks for the idea, I'll do that next time. The ampule is already sealed, and I'd rather not brake it, thus allowing it to be oxidized even more by
nitrogen. I do have more Li (still in some batteries,) which I will store in accordance to the method you mentioned.
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Zyklon-A
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Should I get this scale?
http://www.amazon.com/Smart-Weigh-JDS20-Digital-0-001g/dp/B0...
I seems like a great deal. It weighs from 0.001 - 20 grams. Only $18.00 with free shipping on orders over $35.00.
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elementcollector1
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If you only need to weigh small quantities, go for it. I got a 2000g x 0.1g scale.
Elements Collected:52/87
Latest Acquired: Cl
Next in Line: Nd
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Zyklon-A
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Ok, I already have a 500 x 0.1 gram scale, so this is fine.
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HeYBrO
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Sorry about double post...
Regarding the p-TsOH synth:
(its really noobish, my apologies) if i were to scale down this procedure by 10 times, obviously the water coming off is going to be much less, so
how much of my 10 ml dean stark should i fill with toluene. I know that the toluene must be in excess and the amount of water will be probably under a
ml ( according to the vocal fifth edition procedure ) I presume about 9 ml toluene in the dean stark from the begging would work to drip over and
begin water collection? Or do i have it wrong? ( i should of originally posted this question here... sorry.)
[Edited on 23-3-2014 by HeYBrO]
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Refinery
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What is the solubility of potassium sulfate in methanol?
What is the solubility of ammonium nitrate in methanol?
[Edited on 25-3-2014 by Refinery]
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copperastic
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Hi, im looking for a water pump for distillation and i can only find pumps that are 70 GPH. How many GPH's do i need for a condenser?
Thanks.
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elementcollector1
International Hazard
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Hell, my hose works for a condenser and its output must be somewhere around 10 GPH.
Elements Collected:52/87
Latest Acquired: Cl
Next in Line: Nd
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