Inorganic Chemistry

Hey! I found a instant cold pack at home which only contained ammonium nitrate and water, but it was already used and all the nitrate salt was dissolved with water! But if i boil the soulution can I get back the nitrate without water and will that produce ammonia gas?

Hey, just a hypothetical question (I haven't been able to take Chem yet, but I do know the basic aspects of chemistry, so sorry if I sound like an idiot here). I'm not talking about any specific acid here, so let's just say it's submerged in H+ ions. My uneducated guess is polypropylene, as it appears to be the most nonpolar. Sorry about what is perhaps a stupid question, but any answers would be greatly appreciated.

The Periodic table of elements may be arranged in 3 dimensions as a stepped pyramid. Each chemical element is represented as a cubic block. The Janet Periodic Table aka the “Left Step” Periodic Table may be re-arranged into four square matrices. Each matrix is a different size. Each cell within a matrix represents an atomic element. A cell may be represented in 3 dimensions as a cube. The matrices may be stacked vertically so the “cores” (2x2 cells) are aligned vertically. The result is a “stepped pyramid” (Pyramid Table). One element is associated with each cube. The location of any cube within the structure is defined by location numbers. The atomic number of an…

why is that Ag+ is more stable than Cu+ in water both have d‹10 configuration..

I am required to analyze a sample prepared in inorganic chemistry, but after going through the outlined steps, I have the following: Weight of ppt = Chemical factor = Concentration in 10 ml = Concentration in 1L = % of Ni+ = I have the weight of my precipitate, but I am confused on what chemical factor stand for. I started with 0.2 grams of the prepared salt and the molecular weight of the compound is 394.99, while am to calculate the concentration of Nickel ion in the salt. How do I go about …

Hey so for my college analytical chemistry class we have to come up with a method for the gravimetric analysis of nickel in a coin (quarter, dime whichever). We have to decide which reagents to use...the amounts etc. Any feedback/ideas on how I could do this?

Hello guys.I have a question.What is the crystal structure of coke?I know that coke is made of carbon but I want to know that how are these carbons organized in coke?let me say that more clear.for example , graphite is made of carbon too and the carbons are organized in layers parallel together and are organized in a hexagonal crystal structure.how about coke?

Hey guys.I have a small question.what is "untreated graphite"?Is it natural graphite?

Hey guys.I have a question.Do you know some articles about "Exfoliation of graphite" or "Expansion of graphite" with sulfuric acid?If yes , please write the name of that article or doi for that article. thanks.

Hi science buffs, First post here... seems like a cool place! I've just started using a mixture of hydrochloric acid and hydrogen peroxide to etch printed circuit boards, as I was sick of spending big bucks on (and ruining perfectly good shirts with) dirty FeCl etchant. I'm certainly no chemist, but if I understand this correctly, copper dissolves into solution, creating a "self-regenerating" CuCl2 solution that can be refreshed by simple aeration, or by adding a bit of HCl or H2O2 every now and then. This all sounds great, but I have concerns about safe disposal. Apparently the dissolved copper is highly toxic to fish etc., so I can't just dump it down the d…

Many years ago I built a small O2 generator that concentrated O2 from the atmosphere utilizing pressure swing absorption and molecular sieves. I think they do the same thing for concentrating N. I seem to recall that there were a few fellows with advanced chemistry degrees designing boutique catalysts and molecular sieves for the refining and petrochemical industy, and they where doing quite well financially. I have a number of power plants as customers. I have some friends that are to be layed off this April due to plant closures. The issue is Hg in the plant stack gas emissions. The current corporate removal stategy is sorption on activated carbon. Would any…

Dissolution of NaOH in H2O Why this reaction is extorhermic?

I bought my girlfriend a little ethanol fueled fireplace for Christmas. Much of the fuel is wicked up by fiberglass packing material around the perimeter of the fuel tank / combustion chamber, and the vapors are burned, and it makes a cheery little fire. Ethanol makes a flickering blue yellow flame (a little CO) about 9 inches high. Methanol makes a shorter blue (no CO) cone. If I add Isopropanol to the methanol, it begins to look like the ethanol flame. I would like to add copper to make a green flame (she likes it), but I have been unsucessful on several attemps. I have added copper sulfate to the fuel, but since it is the vapor that burns and not the liquid…

Hi, we were having a discussion the other night, and I said, mercury was much more toxic than lead or arsenic, to humans. does anyone know if this is true. My friend, the nurse, said she worked with mercury all the time, and made up skin creams containing mercury for patients in the hospital where she worked. We were originally talking about mercury in CFL's. Thanks, Chiwi

Can someone explain why if a metal is readily oxidized why the resulting ions or compounds are difficult to reduce? I understand why something like sodium wants to loose its lone 3s electron to form say NaCl but then can't associate this fact with the difficulty in obtaining Na metal. Is it because Na prefers to exist in nature as as ionic compound rather than exist as metallic Na? Thanks

Is it an halogen or Alkali metal???? plz help....

Below is my shot at explaining how to get to the second to last step of the eyring equation from Gibbs laws. However I don't understand two mathematical parts as highlighted and described in the image below. Could someone please explain how they come about? Thanks note: eq 4 should equal eq 2 (just another way of writing it) (not sure hence the highlighted T in eq 3) to get to eq 5. i have cancelled the "T" in the equation to get to eq 6. reversed the minus to get to eq. 3 is the part that i don't understand. update: Please see comments below (not sure how to get from bttom eq in picture to the Eyring equation

What happening to aluminium oxide in molten cryolite (Na3AlF6) at 1000°C ?

Why Hydrogen and Chlorine reacts so violently under UV lights forming a bond? How many moles of HCl need to be produced to explode the 800 ml beaker covering beaker with solute of NaCl in to shards?

Hi! I found out that the oxalate-ion gets reduced much quicker when it is heated up to around 360 degrees K. Why is that?

hey every one i want to gather some information about synthesizing Nano Cp from Cp. please guide me

I was reading the element collection thread and just discovered the ability of Gallium to melt at 86C. Descriptions said you could hold it in your hand and watch it melt!! Checking out the MSDS, I got a much different description... http://www.espi-metals.com/msds's/gallium.pdf "SKIN: In case of contact, immediately wash with soap and plenty of water for at least 5 minutes. Remove contaminated clothing and shoes. Thoroughly clean contaminated clothing and shoes before reuse. Get medical attention if irritation develops or persists." Does anyone have personal experience with handling Gallium? Is it actually safe to play with for an extended period? Are …

Why FeCl3 is(III) and FeI (II) ?

Can solution of NaOH dissolve isolation rubber around copper wire? Would heated alloy of lead and tin react with Cl2(g)? If they do react, anhydrous PbCl2 and anhydrous SnCl4 will form. Dissolve them in still H2O, SnCl4 soluble and PbCl2 not. Filter of insoluble Lead(II) Chloride and wash it. After pure tin crystals can be recovered by electrolyzing solution what's left.

Hello dear forum members, here's the question for you. CuSO4 + 5H2O ---> CuSO4.5H20 Where this 5 came from? How u work out that it's 5? Na2SO4 + 10H20 ---> Na2SO4.10H20 Same question here, why there's ten H2O?