Inorganic Chemistry

I want to make a volcano, but not one like vinegar and baking soda. So my chem teacher recomended using Ammonium Dichromate and she said it will be hard to get hold of and may give you cancer? So how would i make ammonium dichromate and is it really risky?

Is it chemically possible to separate silicon dioxide (quartz) into its components of silicon and oxygen? I'm working on a Mars mission plan and getting oxygen from the rocks there sounds like a really appealing idea.

Why soes fluoride always form F- ion?

does XeF2 have polarity? Actaully,XeF2 have 6 unshare electrons. the molecule would be polar.maybe not?

What, and where are some good sources of magnesium metal. Any source will do, as long as I can easily extract them metal, somehow. Is there a way to get the magnesium, without having the metal?? Can the metal be extracted from MgSO4, Magnesium Sulphate???WOuld I do this by electrolysis?? And is there a way I could do this electrolysis without the magnesium metal (which i dont have:))???

Lets say you pipet into a 250 mL volumetric flask the following: 10 ml of 3e-4 M bromscresol green solution 25 mL of 1.6 M acetic acid (HC2H3O2) 10 mL of .200 M KC1 Solution and diluted to the 250 mL mark What is the molarity of acetic acid in this solution? Do you calculate the number of moles in the 25 mL solution since you know the molarity, then when u get the moles you find molarity over 250 mL? 2nd problem.. Lets say you have a solution with the following: 10 mL of 3e-4 Bromscresol green solution 10 mL of .160 M sodium acetate solution and diluted to 250 mL mark What is the mles acetate present? Do you calculate the # of moles ov…

What is the mole count on Hydrochloric acid contained in Muriatic acid? I've poured it on aluminum and zinc and it makes some strong reactions. This kind of goes along with the "making hydrochloric acid thread." Thanks for the help.

hey anyone got any experiments to try? I have been looking for some interesting ones to do. How come when zinc is added to HCl it turns the liquid purple? thanx

How to they separate uranium 238 from 235? One of them is three neutrons heavier! How do they do it? Is there a way of taking out three neutrons from 238 to become 235?

Why is HSO3- a stronger acid then H2SO3? And also, i know that When the size of an atom X increases, the H-X bonds decreases, meaning the strength of the acid increases since more H+ are ionized. But when when H-X are more electronegitive, doesnt it mean the bonds between the H-X gets stronger, meaning fewer H+ ionizes?? But this is not the case, the more electrongetive the bond between H-X, the acid strength gets stronger. Is my conceptual idea wrong? Also, lets say you have solutions of NH3, HCl, NaOH, and HC2H3O2 , all with the same solute concetrations. How would you know rank the pH of these solutions from highest to lowest or vice versa?

I need some help solving this question... an explaination would be extremly helpful.. thanks Calculate the volume occupied by 0.0950 mol of calcium phosphate at 25oC and 101.3 kPa, given its density at this pressure and temperature is 3.14 g/mL.

I know the oxidation number of non-metallic elements. But How do I know the oxidation number of transition elements. Such as Fe and Cr Cr = 4s1 3d5 when Cr change to Cr2+ Cr3+ Is it stable?

Siple as the title......... WHY ONLY PURE METALS USE THIS KIND OF BONDING? What is so special about the characteristics of pure Metals due to this kind of bonding? since why the non-Metals cannot use this type of bonding.....? thx for the responds

Some one told me that in the ion, we always write oxygen last, although it is positive(since cation always is written first)... for eg, SO4, but why we write OH instead of HO as a compound ion? Any help>

I did an experiment in my chem 2 class for college. We had to titrate calcium hydroxide using HCl. After we found the volume and calculated the moles, concentrations, etc, we had to calculate the Ksp of the calcium hydroxide solution. Our percent error was really high and our prof. said that is what we have to try to figure out. Basically, I am asking why the percent error of Ksp would be so high in a calcium hydroxide titration. THANKS!

can anyone explain the relationship between the position of the elements in the periodic table and: electrical conductivity ionisation energy atomic radius melting points boiling point combining power(valency) eletronegativity reactivity thanx so much

How would i get pure copper from those plumber pipes? What would the plumber pipe be made of? can i use something else instead of H2SO4 when making batteries for example HCl or vinegar? thanx

Hey, i have some strontium-sup and iodine-sup used for marine fish tanks. would i be able to crystalize them and get strontium and iodine. thanx if i can, how do i do it? thanx

Ammonia, a polar molecule (NH3), has a melting point of -77`C. If liquid ammonia at -50`C was kept at this temperature, is it possible to dissolve ice (H2O) in it? (or dissolve solid H2O in any polar liquid, for that matter...)

Can anyone tell me what the acid and metal that could make zinc chloride? I think they are zinc(durr) and Hydrochloric acid, but I need confirmation.

I was told to balance an equation of potassium manganate and FeS04 with a catalyst sulphuric Acid (titration). I was wondering if any of you know what the balanced equation will look like. FeSO4 + KMnO4 + H2SO4 ----------> I know that H2SO4 is a catalyst which means it has nothing to do with the final product because it only acts as a medium that speeds up a reaction. (correct me if wrong) So my question here is, how should this be balanced. I am thinking that H2SO4 will absent during the balanced equation but what the products are is what baffles me. please help?

there`s been a few posts scattered all over the place with regards to this subject, myself included in these posters. I`m starting this one as a response to the Zinc powder and Sulphide, and other threads that skirt on this subject, as way of getting and keeping the others on topic again. thus far been discussed has been metalic sulphides, I`ll post the SFN thread URLs here as references a bit later. a note to Ice-Pheonix, with regards to the chats weve had in the forums about Zinc Sulphide in particular, there are other materials such as Strontium Aluminate (suposed to be even better!). they may be worth looking into as soon as I can build my stock of Strontium…

I`m uncertain as to the practicality of this, but whilst making a solution of Sodium Sulphide and adding more sulpher and heating until no more will dissolve, there is a VERY distinct color change! when cool (30c) the color is orange, a rather nice clear orange color, and when heated it seems to turn deep red then almost brown. now I know of quite a few chems that will do this at extremes, or with acid/alkali or light or moisture etc... Cobalt Chloride being one example, but simple Sodium Sulphide! needless to say, when it cools sufficiently I`ll put it in the fridge and see it it goes pale orange. you`ll only need some simple sodium hydroxide and sulpher in water to do…

here's some questions from my chem exam 2day... wondering abt the ans...=P what will be produced if NaH reacts with water? is NaH flammable?! == is CO flammable!? == and also...CO2 mustn't called inert, isn't it?! coz the question is asking whether the 2 statements are correct... 1st- CO2 is used in fire extinguisher... 2nd- CO2 is inert n heavier than water... it is a mc question, a. both are correct with 2nd statment is the explaination of the 1st b. both are correct but the 2nd is not an explaination c. 1st is correct but not the 2nd d both are incorrect.... thx~ asking some stupid questions again... /.\

What is KNO3 used for in horticulture? How do i work out how many moles a chemical is?