ventilation hood

and we’re all together again | naruto

sum: the disbelieving laughter on her lips makes no sound, but it exists: in the part and the smile and the gleeful curve. [post-canon.]
a/n: this was my submission for the @naruhinafanzine, i hope you all enjoy !

There is something truly marvelous about how in love with a person one can be in spite of what stands before them. Hinata knows this, because although her husband stands before her looking a total mess—hair uncut and unkempt, lavender stamped under his eyes, robe drooping off of his shoulders—there is something about the ramen takeout and handcrafted card and gift bag in his hands that makes her heart swell to an unfathomable degree.

It is three in the morning on a work night, and their tenth wedding anniversary is today, and Naruto Uzumaki remembers.

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anonymous asked:

I remember reading that during WWII, people scared of the Nazis confiscating their gold and stuff dissolved it in some kind of solution and then got the gold back out of it after the war. (you can tell I know a lot about chemistry lol). Are there any other valuable metals / mineral / gems that can be 'hidden' in a similar manner, then brought back when it's safe?

There appears to only be one well-documented case of this tactic being put to use, but what a case it was! The items to be hidden were not only precious metals, but in fact a pair of very precious medals – the 1914 and 1925 Nobel Prize medals awarded to Max von Laue and James Franck. Their medals had been given to Niels Bohr for safekeeping during the war, and he was keeping them at his Institute for Theoretical Physics in Copenhagen. When the city was captured by German forces in 1940, the medals needed to disappear before they could be confiscated. Bohr asked one of the chemists working at the institute (George de Hevesy, who also happened to win the 1943 Nobel Prize in chemistry) to quickly hide the medals in such a way that troops searching the building would not be able to find them. De Hevesy’s solution was in fact a solution – he would dissolve the medals and hide them in plain sight.

The Nobel medals were made of 23 carat gold, and gold is notoriously inert and difficult to dissolve; there isn’t a single concentrated acid or base that can do the job alone. However, there is a mixture known as aqua regia (literally royal water or king’s water) that is known for its ability to dissolve ‘noble’ metals such as gold. Aqua regia is a 3:1 mixture of concentrated hydrochloric and nitric acids, and it is only with this combination that you can get a decent amount of gold to dissolve. The nitric acid can oxidize very small amounts of gold up to the aurous ion (Au3+), and with an excess of free chloride it will form the tetrachloroaurate anion, AuCl4-. This ion is stable in solution and can even be precipitated out as solid tetrachloroauric acid, HAuCl4. Once de Hevesy had dissolved both medals, he left the beaker on a shelf – the German troops ignored it during their search – and when he came back after the war all he needed to do was precipitate the gold from solution and send it back to the Nobel Foundation, where it was recast into new Nobel Prize medals for von Laue and Franck.

One detail that this story omits is how dangerous it is to even make aqua regia, let alone use it. I can tell you from personal experience that it is quite an active mixture; the two starting acids are both clear and colorless but the solution immediately turns yellow when they are mixed, and about five minutes later it turns a deep red color and begins evolving four different toxic gases: chlorine (Cl2), nitrosyl chloride (NOCl), nitric oxide (NO), and nitrogen dioxide (NO2). Once you start dissolving things like gold, you generate even more NOx. If you’re planning to have your characters use this technique without heavy-duty ventilation (e.g. a fume hood or acid-gas respirator), you should probably also be planning to deal with the potentially fatal pulmonary edema that sets in a few hours after exposure to the fumes.

To get to the actual question at hand, what else could be hidden with this trick? If you’d like to hide a precious metal and get it back afterwards, then you’re in luck. Aqua regia is good for dissolving gold and platinum, and plain nitric acid will take care of copper, silver, and many other metals with fewer toxic byproducts – just keep in mind that it might take a few hours for a large object to dissolve. In all of these cases the dissolved products are stable in solution, and if they did precipitate out they would not be recognizable as the starting metal. All of this chemistry relies on oxidizing the metals into a soluble form, and therefore getting them back later only requires adding a suitable reducing agent. For precipitating gold out of aqua regia, the standard reducing agents are iron (II) chloride, zinc metal, or oxalic acid (C2H2O4), each of which will donate electrons to the Au3+ ions and turn them back into elemental gold, which falls out of solution as a yellow powder. This is actually one of the primary methods for reclaiming gold from electronic waste, though there are additional purification steps to remove other unwanted metals.

As for hiding gemstones (which are really just shiny minerals), that’s a little more difficult – and getting them back afterwards is not going to be easy. The reason for this is that most gemstones are some form of metal oxide arranged in a particular crystal structure. The four “precious” gemstones include diamond (carbon), ruby/sapphire (both Al2O3), and emerald (Be3Al2(SiO3)6), and for good measure we’ll also consider opal and amethyst which are various forms of SiO2. You can dissolve everything but diamond in one type of solution, but as we’ll see in a moment it would be better for everyone if you didn’t. Diamonds are the odd gem out in that they are made only of carbon; no known acid or base will attack them, but diamonds are not forever and will indeed burn in air above 850 °C. To get the other gems into solution you’ll most likely need to resort to hydrofluoric acid, that most terrible substance that would just as soon kill you as help you smuggle your valuables. Hydrofluoric acid (HF) is phenomenally good at dissolving metal oxides by forming soluble metal fluorides, so dissolving the gems isn’t the problem. There are even commercially viable methods of reclaiming the metal from the solution of metal fluorides – virtually all aluminum is produced this way – but turning that metal back into a gemstone is really rather difficult. As it turns out, gemstones usually take a very long time to form naturally (sometimes on the order of millions or billions of years), and recreating that process on a timescale shorter than your average human life can be tricky. It can be done (check out hydrothermal growth for quartz or the Verneuil process for ruby/sapphire), but it generally requires rather expensive equipment and a lot of time and energy.



dragondraems  asked:

Horror. Preferably body horror, but I ain't picky.(ps. your writing style is really nice)

Body horror, eh? There’s so many options for that, I had a hard time deciding on something. Here you go!

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