RyanJ

Good point, a big no-no. What is it called? Absolute Zero? Nothing can reach or excede it correct? Cheers, Ryan Jones

Thanks for the link pyromaster22 - though my supply should last for quite a while as I still have over 1.5Kg left Cheers, Ryan Jones

Daniel is it? yes once it is started there is no way to stop it. It actually produces its own Oxygen and everything it needs so it actually drives its self. Once its started there is no stopping it. Nothing, nothing can stop the redox reaction once it has started so unless you want it to continue don't even start the reaction [ce]Fe_2O_3 + 2Al --> Al_2O_3 + 2Fe (\Delta H -851.5kJ/mol)[/ce] Extremly exothermic, tipping anything on it would make no difference, be it water (Probably split into Hydrogen and Oxygen and then react formaing water again) or even liquid nitrogen! Cheers, Ryan Jones

Actually it was given that name because, at the time of its naming, they presumed that things could only burn (Become oxadized) in Oxygen, it was later foudn out that things can be Oxadized by other substances and thus the definiton was expanded to the movement of electrons but the name stuck Cheers, Ryan Jones

Yea it could but its probably not something I'd like to try in a home lab (I would not really like a load of Fluorine gas stored, knowing what this stuff can do)... I must say it sounds strange burning water because people normally accociate burning with flames and not the movement of electrons I'll have to try this one day though Cheers, Ryan Jones

I'm not surprised... in a book I have its explaining about the incompatabilities of certain chemicals with one and other... the listing for Fluorine is everything... Cheers, Ryan Jones

But then again if you hit a diamond with a hammer it too will shatter and the hammer will remain undamaged. I'm not saying that Ice is harder I'm just saying the same thign woudl happen for a diamond Cheers, Ryan Jones

How about a section so people can post articled they have written for other people to refer too? Cheers, Ryan Jones

Hi everyone, I'm curiuos: does anyone know how many enzymes humans have and what they do? This has just been one of those curiosities for a while, I have heared of quie a few but I'm shure there are many, many more Also, are most of these common to different species? I would imagine that some would be the same but others would not be there and ones that humans don't have instead Cheers, Ryan Jones

Well explained For more information have a look here Cheers, Ryan Jones

I'd have to agree with RoyLennigan on this one. Ice cna be scratched by diamond and therefor is not as hard as diamond. You coudl say the ide is extremly compressed but then you coud still do the same for the diamond and we'r back in the original position - Ice is not as hard as diamond infact you can scratch it with your fingernail! Cheers, Ryan Jones

I also have one more question - what is supersaturation? Does it affect the concentration? Cheers, Ryan Jones

Hmm... thanks for the information woelen So you are saying that the highest concentration that is possible is dependent on the compounds solubility? That makes sence and also explains how some can reach 2100% concentrated... are these liquids? As far as I cna see this is the only way to get 100% concentration Cheers, Ryan Jones

Do you mean its the actual source or the fule for the combution? If you do then yes You'd be hard pressed to have a coal fire without the coal Just to add: Iron wool will also burn in all of the Group VII elements in gas form as far as I can tell. (tested with Chlorine, Bromine and Iodine - can't get any Fluorine!) Cheers, Ryan Jones

Whats the highest (feasable) concentrations of Hydrochloric, Nitric and Sulphuric Acids? I have Nitric Acid at 70% conc. I have heard you can make Sulphuric Acid 97% conc. by boiling the sulution untill you stop seeing a white smoke. No idea abut Hydrochloric Acid at all... Anyone have any ideas? Cheers, Ryan Jones

I can't think of an example off hand but if there were a strong exothermic reaction then it could start a fire I suppose Cheers, Ryan Jones

Thats about right, in Cosmos Carl said it was about $95 Cheers, Ryan Jones

We are? Human is that a species of some sort? Well... I was last time I checked... or was I? ... Yes I was and still am Cheers, Ryan Jones

Very true, you can get this stuff real cheap as pyromaster22 has said I bought 1Kg of the stuff for umm... I think it was about £20 - I don't even need that much it just works out a lot cheaper to buy in bulk! Cheers, Ryan Jones