Inorganic Chemistry

WHat is the total concentration of anions (i.e. SO4 and OH ions) in 1 M solution of MgSO4.7H2O?

Have a few tubes of Construction grade Silicone... 100% Might like to do some projects one of which might be to create shapes and forms through liquification. Would hope that the silicone, once formed can be returned to its original consistency. Guidance sought

Nitinol is a metal made of nickel and titanium. It has shape memory and superelasticity. How does the shape memory work? How can a change in crystal structure have an impact on the shape?

Im 11 so since it's Easter tomorrow we were dying eggs. My mom bought this really cheap 24K Easter egg paint that didn't work very well because it didn't stick to the eggs. We weren't disappointed because we already made cool egg designs so it didn't really matter. It did actually have little gold leaf flakes in it (I checked under a microscope). My mom said I could have it for my chemistry experiments. I did some research and it is made of 3 things. 1. Fine 24K gold flakes, 2. water, 3. a water-soluble binder. I thought if i made Aqua Regia with hydrochloric acid and nitric acid. I then thought if i could pour the gold containing paint into the Aqua Regia to form Chloroa…

I'm wondering if there is a simple way of separating the precious metal content of a catalytic converter other than, for example, aqua regia when the honeycomb has been crushed/ground to the consistency of facepowder. I mean, can you heat it to the point where the crushed honeycomb will melt and allow the metals to sink to the bottom of the crucible?

I am starting a series on YouTube of extracting the elements. I already know what im going to do for Hydrogen (electrolysis) but im having a harder time with Helium. I know that pure Helium would suffocate you so they mix it with Oxygen in balloons so if people breath it in they wont die. I thought of somehow separating the mixture by density: helium is lighter than air so it rises, but oxygen makes up air but nitrogen makes up the majority of air and nitrogen is more dense than oxygen. I would like it if someone could tell me how to separate this mixture so i can have a pure sample of helium for my collection

I recently learned that inside of those "pop-its" there was about 0.8 milligrams of silver fulminate. This is my first thing on these forums so no judgement . I was wondering if i could somehow extract this silver fulminate. I dont know what i would use it for, maybe exploding arrows? (for targets not animals). I cant find the MSDS for solubility. If someone could tell me what it is soluble in i would really enjoy that. -Soren

Hello to you all. I'm an enthusiastic "model maker" and left school a very long time ago. My knowledge of chemistry reached the zero point. Not because I didn't like it, but just by not using it anymore. At the moment I'm busy making a self propelled bucket dredger (scale 1:25) Including two engines and steam boiler. Of Course she will be radio controlled and therefore almost fully self controlled in the engine room. Using different sensors and a PIC, all self designed. After learning how to use a 3D drawing program, I managed to get a dredge bucket to be printed. That resin-print-model is used to create a mold in heat resistant silicone. In that mold …

I am an element collector and i am looking for easy-to-find elements. I would like it if you could name a few pure elements that are easy to get (without buying them online). And if you do say one in its compound could you please explain how i could extract the elemental form?

I recently purchased 100 grams of gallium and used some to destroy an aluminum can, I then foolishly took the remaining gallium that had been in contact with the aluminum and added it back to my uncontaminated gallium supply, I found the next day that the gallium had taken on a foamy puffy texture and looked very dirty grey. I was able to squeeze this new mixture between my fingers to cause pure gallium to drip out, leaving a filmy thick substance on my finger which I determined was un-savable. I have managed to recover about 30 grams of the gallium by doing this and then pulling the gallium into a syringe and shaking/tapping the syringe to separate the strange new substa…

I have difficulties in understanding the concepts of acid and pure acids. I understand that acid is defined as the substance that dissociates/ionizes to produce H+ ions when dissolved in water. So with that being said, I suppose pure acid would be 100% substance without the water. During the acid lecture, we were told that the H+ ions are responsible to exhibit the properties of acid, therefore does that mean pure acid won't have the properties of an acid? will it be inert? does it mean pure acid are not corrosives?

Copper is the only metal in Period 4 with a positive reduction potential. Doesn't that make it the least reactive row 4 transition metal? And if so, why do copper pipes leach copper ions while titanium pipes don't?

Hello everybody! I have a bit silly question maybe... I have to make solution with Na2HPO4.2H2O equal to 66,6mM (So I have to take 11,85g of it). OK, but I have Na2HPO4.12H2O. How to calculate it to get a solution with the same concentration of Na2HPO4. My task is to make a Sorensen buffer with 66,6~,7mM KH2PO4 together with Na2HPO4.2H2O (66,6mM) = pH7. Thank you!

I know the formula for ln{k2/k1}=Ea/R {1/T1 - 1/T2}, but I am confused as to how to apply it to this graph. I believe T can be found by taking two points from the graph such as at 5 and 1 on the X axis then inverting the value to obtain T in kelvins. But how do I work with Ln P? Thanks.

after the agua regia has eating the gold how do you get yhe gold back out????

Hi, i was trying to prepare it, but it seems to me it is contaminated with salt probably... at the final step, i evaporate it completely, as they recommend... when i was trying not to evaporate it completely, the purity was better but the yield was extremely low after crystallization... did anyone of you prepare pure carboplatin? i followed this procedure (Inorganica Chimica Acta 359, 2006, p. 4095–4104): 1) Ag2R(COO)2: Two millimoles of aqueous NaOH are added to 1 mmol of the dicarboxylic acid dissolved in a small quantity of water. Two millimoles of AgNO3 are then added to the sodium dicarboxylate solution in the dark. A white precipitate forms immediately. …

I'm no expert (at all) and this idea is probably retarded as hell but anyway just dribbling an idea here. Would two electrical rods in a body of liquid (on the furthest sides -|_|-), so that: 1: If a line was drawn between the two lowest parts, it would reach the deepest part of the liquid. and 2: There were no gaps between the electrical rods and the furthest of the sides of the body of liquid. Would there be anyway that an electrical current between the two rods could be conducted through the body of liquid to essentially create a barrier (as in could drain one side of the body of liquid and have the opposite not be drained). I'm not suggesting w…

Please keep in mind that I am an MBA student whose chemistry knowledge in chemistry in seriously lacking Background: As apart of my graduate program we travel to a developing country (Rwanda in my case) and help local social enterprises to develop their business. The company that my group is working with is called Perfect Chalk and they create chalk for local public schools. Since 83% of the populations without a stable electrical grid, chalk is the main teaching tool in this country. Problem: This company uses 3.5 L water and 3.5 kg calcium carbonate (limestone) to create a batch of 600 single pieces of chalk. However these pieces are often porous causing it …

People, Have some Mercuric chloride and want to convert to the mercuric nitrate, if possible/practical. Can leave it in aqueous solution as a 1Normal strength- do not need to have a crystalized nitrate. Any advice appreciated. (I have converted Be chloride to the nitrate in the past by boiling/reduction, with continual addition of excess nitric....) Thanks.

In the book Handbook of Soil Science: Properties and Processes it says that the reaction NH4+ <--> NH3 + H+ is going to the left, consuming protons. It mentions something with the reactions Pka = 9.5 but doesn't explain further why it will go towards ammonium. Can someone explain this for me?

I might be missing something fundamental here... If I react iron hydroxide with Fluoroantimonic Acid would I get a salt? I mean after the fireball... If so would the salt be stable outside of a solvated system? Minus

Any help would greatly be appreciated (I posted this in organic chemistry and realized it may be more applicable here): So I have this study which involves fish catch. More specifically we analyze the water chemistry of the ponds before we catch them. My question is this: will disturbing the sediment (i.e releasing H2S or any other gases) lower or rasie the pH (or alter another parameter). People are walking around the ponds all day making the water extremely turbid. The soils in question are young sulfate rich soils of the Mekong in the rice field ponds. I have no idea of the DO in the waters or how deep the anaerobic bacteria lives. Phosphate and Nitrates are relati…

Hello, I'm working on a sculpture project, ( I don't come from a science background ) and I'm wondering if anyone here has any idea on earth how to dissolve steel dust from a grind down chair. Ideally I'm looking to have the dust dissolve in a solution similar to the way sugar dissolves in a cup of coffee. I've tried nitric acid, hydrochloric acid, alum, bleach, vinegar, and so on and so on. Can anyone here give me any advice? Again, I'm looking to have the steel turn into a liquid, so melting will not be a option. Thank you !!!

I got my first element cube and it is a beauty great work by smart element. Here is the video: [link removed - damaged] Also it doesn't seem to move freely but i don't know if it is because the mercury is in a vacuum? Or is it something involving it's high surface tension? I don't know but maybe you do

First off I must say that I am very novis when it comes to chemistry so here I go. I dissolved some mercury in nitric acid. the mixtrue stayed clear for many days then after several weeks, I went to us some to coat a coper plate and I noticed these yello crystals in it. It also had a layer of fine powdery white crystals on the bottom of the container. Are these the same crystals and just different colors? If not what are they? I could not get an image of the white crystal powder. My camera kep focusing on the outside of the bottle. But I did get the yellow ones. see images here: http://s203.photobucket.com/user/ironious/library/crystals