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mayko
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These lovely blue mushrooms pop up around this time of year. Turns out, they also bruise a lovely green color!
Incidentally, does anyone have protips on preserving mushrooms? I tried putting this one in a closed container with some CaCl2 but it just got slimy
and grungy...
al-khemie is not a terrorist organization
"Chemicals, chemicals... I need chemicals!" - George Hayduke
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The Volatile Chemist
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Alexleyenda, quite the colorful reaction indeed! Is the practice of indirectly siphoning product from a sigma aldrich jar common? 
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DraconicAcid
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That's a Sure-Seal bottle. The contents are removed using a syringe, and nitrogen added through a needle so that air doesn't sneak in while contents
are removed.
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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violet sin
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Bought a lill bit of titanium (6Al 4V alloy)
  
1) nice size chunk
2) 7 lb 13 oz each by a kitchen scale
3) nerdy size reference
Ya, the purpose... I wanted to use it for unrelated projects and planning on using some scrap for labware. Not sure exactly what. But I havent
often seen a Ti sample that big, only having wire and thin plate besides it. Thought it might be a decent share.
[Edited on 23-7-2016 by violet sin]
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Texium
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So... what are you going to do with 16 pounds of titanium alloy? (not to say it isn't beautiful of course!)
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alexleyenda
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As draconic said, the bottle was is fact only kept under nitrogen atmosphere to make sure it doesn't react with water or oxygen in the air. The tube
and needle are connected to a nitrogen tank. That being said, something similar to what you said is quite common, to transfer with a cannula. Its a
kind of needle with both ends sharp, you put one end in both flask and add a nitrogen pressure to push the liquid through the cannula. It's like using
a syringe to transfer a liquid, but much easier and there are less chances of spills or whatever. You can't measure the amount transfered however, so
it's used when you got to transfert the whole thing.
( http://www.chemistryviews.org/SpringboardWebApp/userfiles/chem/image/2013/2013_03/Tips_Schlenk/cannula(1).gif )
[Edited on 23-7-2016 by alexleyenda]
Help us build the Sciencemadness Wiki! Every question and tips about amateur chemistry two clicks away, wouldn't that be awesome?!
sciencemadness.org/smwiki
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Brain&Force
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GIF time! I decided to do a video of holmium acetate changing color in different lighting. It's just as dramatic in person.
<iframe sandbox src='https://gfycat.com/ifr/DefinitiveWarlikeAlaskankleekai' frameborder='0' scrolling='no' width='640' height='359.5505617977528'
allowfullscreen></iframe>
If that doesn't work use this:
<iframe sandbox width="560" height="315" src="https://www.youtube.com/embed/KVAUSD3UmIc" frameborder="0" allowfullscreen></iframe>
At the end of the day, simulating atoms doesn't beat working with the real things...
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Hegi
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Mercury/silver nitrate solution. Pretty smal white crystals started to form at the bottom of the beaker. I suppose it is mercury(I) salt.
<img src="http://chem.pieceofscience.com/wp-content/uploads/2016/08/dianinstrom.png" alt="mercury" style="width:600px">
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
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fluorescence
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Okay....so....
1) Melt Ammoniumthiocyanate....check
2) Add Ammoniumdichromate....check
3) Extract Product with hot water....check
4) Put it in the freezer....check
5) Take it out of the freezer......oh....damn it.
So there is this point where water "precipitatates" as well -.-
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fluorescence
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I have absolutely no clue if it's supposed to look like that since it didnt work for a friend who tested it as well but for me I got this orangle
nearly glowing bright compound which is hopefully a Caffeine-complex....will need to make that again but it looks really amazing.
The second picture was something interesting I found. So there is this line on I think Wikipedia where it says that Dimanganese Heptoxide was stable
in CCl4. So we made some in this solvent. The question was how to destroy it so we took it and dropped it into a container full of water.
Its hard to see on the picture but this smaller vial is open and filled with Permanganate in CCl4 and around this vial is water. SInce the
two dont seem to mix and the solvent is quite oily it stays inside without coloring any of the water. It lasted for a day like this then I moved the
vial and it mixed.
 
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NedsHead
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Quote: Originally posted by mayko  | These lovely blue mushrooms pop up around this time of year. Turns out, they also bruise a lovely green color!
Incidentally, does anyone have protips on preserving mushrooms? I tried putting this one in a closed container with some CaCl2 but it just got slimy
and grungy...
|
it looks like it could be Lactarius indigo, https://en.wikipedia.org/wiki/Lactarius_indigo
Are you preserving to keep a specimen or to eat? sun dried or put in a food dehydrator will suffice if you're intending to eat them at a later date, I
have no idea how you would preserve one as a specimen.
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Morgan
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| Quote: Originally posted by NedsHead | | Quote: Originally posted by mayko | These lovely blue mushrooms pop up around this time of year. Turns out, they also bruise a lovely green color!
Incidentally, does anyone have protips on preserving mushrooms? I tried putting this one in a closed container with some CaCl2 but it just got slimy
and grungy...
|
it looks like it could be Lactarius indigo, https://en.wikipedia.org/wiki/Lactarius_indigo
Are you preserving to keep a specimen or to eat? sun dried or put in a food dehydrator will suffice if you're intending to eat them at a later date, I
have no idea how you would preserve one as a specimen.
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If you scroll up the page there's a photo where I squeezed the juice out of one onto a plate making a pretty color.
http://www.sciencemadness.org/talk/viewthread.php?tid=18256&...
[Edited on 5-8-2016 by Morgan]
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mayko
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That does look right, thanks for the ID and the nice pictures... edibility hadn't even crossed my mind!
I talked to the herbarium folks, apparently they usually make wax models rather than try to faithfully preserve specimens.
al-khemie is not a terrorist organization
"Chemicals, chemicals... I need chemicals!" - George Hayduke
"Wubbalubba dub-dub!" - Rick Sanchez
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Velzee
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My attempt at photographing potassium oxalate/chloride and green potassium ferrioxalate crystals:
Check out the ScienceMadness Wiki: http://www.sciencemadness.org/smwiki/index.php/Main_Page
"All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident."
—Arthur Schopenhauer
"¡Vivá Cristo Rey!"
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Brain&Force
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Gadolinium acetate crystals under a microscope with a polarizer.
<a title="By brainandforce (Own work) [CC0], via Wikimedia Commons"
href="https://commons.wikimedia.org/wiki/File%3AGadolinium_acetate_under_microscope_polarizer.jpg"><img width="800" alt="Gadolinium acetate
under microscope polarizer"
src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f0/Gadolinium_acetate_under_microscope_polarizer.jpg/1024px-Gadolinium_acetate_under_micro
scope_polarizer.jpg"/></a>
At the end of the day, simulating atoms doesn't beat working with the real things...
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crystal grower
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@Brain&Force
This´s not pretty picture, this is beatiful picture  .
Could you tell me approximately how big (or rather small ) they are?
thanks.
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crystal grower
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Nice crystals velzee.
Maybe you could try to take a photo with more contrasting background.
by the way, could you enlighten me what were you trying to make or why did u crystallised these mixture of compounds?
thanks in advance .
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DraconicAcid
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| Quote: Originally posted by crystal grower |
Nice crystals velzee.
Maybe you could try to take a photo with more contrasting background.
by the way, could you enlighten me what were you trying to make or why did u crystallised these mixture of compounds?
thanks in advance . |
I'm sure the potassium oxalate was used to make the potassium ferrioxalate, and was not intentionally mixed with it.
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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Velzee
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| Quote: Originally posted by crystal grower |
Nice crystals velzee.
Maybe you could try to take a photo with more contrasting background.
by the way, could you enlighten me what were you trying to make or why did u crystallised these mixture of compounds?
thanks in advance . |
He's back! Welcome back!
Yes, as DraconicAcid said, I made an attempt at potassium ferrioxalate, but I forgot to account for the stoichometry when I replace KOH with K2CO3,
thus excess contaminates remained.
Check out the ScienceMadness Wiki: http://www.sciencemadness.org/smwiki/index.php/Main_Page
"All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident."
—Arthur Schopenhauer
"¡Vivá Cristo Rey!"
—Saint José Sánchez del Río |
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DraconicAcid
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I got the same kind of result when I tried to make the malonate analogue. To get all the iron in solution, I had to use excess malonic acid, and then
I couldn't get rid of the excess.
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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Velzee
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| Quote: Originally posted by DraconicAcid | | I got the same kind of result when I tried to make the malonate analogue. To get all the iron in solution, I had to use excess malonic acid, and then
I couldn't get rid of the excess. |
Do you still have the complex? If so, can you post photos?
Check out the ScienceMadness Wiki: http://www.sciencemadness.org/smwiki/index.php/Main_Page
"All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident."
—Arthur Schopenhauer
"¡Vivá Cristo Rey!"
—Saint José Sánchez del Río |
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DraconicAcid
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I have pictures if I can figure out how to post them.
[Edited on 26-8-2016 by DraconicAcid]
[Edited on 26-8-2016 by DraconicAcid]
[Edited on 26-8-2016 by DraconicAcid]
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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Velzee
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Wow, those are beautiful!
Check out the ScienceMadness Wiki: http://www.sciencemadness.org/smwiki/index.php/Main_Page
"All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident."
—Arthur Schopenhauer
"¡Vivá Cristo Rey!"
—Saint José Sánchez del Río |
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Neme
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What are those? I need them
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DraconicAcid
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K3[Fe(mal)3], contaminated with K2mal or KHmal, where mal = malonate. They're not that great in person, as I used a decent magnification on the
picture.
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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