RyanJ

dave, would there be any way to do basic structure diagrams and electron configurations in LaTeX? Cheers, Ryan Jones

I'm not shure, it was an old encyclopedia so its probably out of date anyway. Actually a lot of the genertic information makes up "Garbage" - Its probably something we do not yet unserstand... it must have some use Also, maybe it was refering to a special group of enzymes? Like I said it was an old book with an obscure reference so its probably wrong but I'd actualy like to know a rough number - do you have any ideas? Cheers, Ryan Jones

I think you'll get [ce]KCl[/ce] and [ce]NaNO_3[/ce] - I think the element with the highest electropositivity will displace the one with the lower electropositivity. Maybe it also has something to do with the new stability of the ions in the exchange but I'm not too shure about that These type of reactions normaly occur in th following form: [math]\ce{A + BX -> AX + B}[/math] is A is more reactive than B. E.G. [math]\ce{CaCl_2 + K -> KCl_2 + Ca}[/math] Cheers, Ryan Jones

I've also had something simmilar, once with a piece of really smooth [acr=Polytetrafluoroethylene]PTFE[/acr] and once with Silver metal Cheers, Ryan Jones

Organic Compounds - Limit to the C-C chain length? Is there a limit to the longest possible C-C chanin? Would it be possible to make a C-C chain made up of all the Carbon atoms in the universe? Its actually pretty mad when you think about - these chanins can be messive, millions of Carbons lond so my question is, is there an actuall limit to this or cna it just go on and on and on... If it would become unstable at a point then I bet it would have to be a huge number of Carbon atoms anyway! Cheers, Ryan Jones

Maybe I'll try it one day - right now I'm working on displacement reactions and that'll keep me occupied for a while! Cheers, Ryan jones

Not a lot really, just experiments involving reactions between it and various other chemicals And yes I know it cna be used for other things such as rockets but I've not done one of those yet Cheers, Ryan Jones

Because I had one spare - like I said it was an industreal one anyway so it was practually worthless.... YT2095 - is there any better cause? Cheers, Ryan Jones

I actually forgot I posted this thread, there are about 200 known according to a book I have and new ones are being found all the time! Cheers, Ryan Jones

Really, thats kind of cool Makes helium quite a unique element! Also, when in its liquid form it seems to defy a lot of the laws of physics, it climbs up the side of beakers and stuff - its really wierd! Cheers, Ryan Jones

Actually its an interesting question. When you rip paper you can't be tearing throught the middle of an atom so you must be breaking some bonds. These bonds are between atoms or groups of atoms that share electrons as such when you pull them appart you basically get a set of ions The thing is, like magnets, negative and positive like to be neutral and so attract one and other and in dound so form bonds. When something is solid it is then said that the temperature of the air is insufficient to break the bonds of the element or compound. So, I suppose you could say it does act like a big jigsaw puzzle Cheers, Ryan Jones

As far as I know Solid state Helium is the coldust any substance needs to be coolled too in order to freeze. Some interesting properties of liquid helium are that it seems to defy gravity and climbs up the side of container... very odd stuff... Its melting point is -272.2 and so at anyhting below that temperature it is solid, just a few degrees above absolute zero (−273.15) which is the temperature that we can never reach.... Cheers, Ryan Jones

Well, at the time of that everything was believed to move realtive to an aether. When this was dissproved by an experiment (I will not bore you the with the deatils of the experiment though...) people were stuck... The Einstein came along and started to think of what would happen near to the speed of light - he them came to the idea that Light has a constant speed and every other reference frame moves relative to light. A good book that explained the above well to me was a book by Kip Thorne (sp?) called "Blackholes and time warps" and it did a very good job at explaining it E = MC2: I have no idea where how came up with this... I think that Special Relativity was devised either from C being constant or the other way arround I'm not really shure General Relativite: This was Einstein's way of combining Special Relativity and gravity and this time was much more complec but was proven in that explained exactly the orbit of Mercury whereas the Newtonian one had failed. I think it was Einstein's unique way of looking at things that inspired him to use a geometrical system to show how gravity bends space and time (Spacetime) and I think it was the only solution as to expain gravity in conjunction with SR. Again I'm not an expert (No-where near) - I'm shure if you Google for Special Relativity, or General Relativity you'll find some more informaiton and I'm also shure the Physics Experts will be able to help you too! Cheers, Ryan Jones

I'm not shure how but thatd what its used for Have you ever added sulphuric acid to sugar? You get a big black mass, the sulphuric acid has actually pulled the water out of the compound! And again in another expermients where a gas needs to be dried, its bubbles through sulphuric acid... Like I said I have no idea why it does this (Maybe one of the mods can help you out on that) but I know it is a very useful property Cheers, Ryan Jones

Ah, right I think I get it Are these organic peroxides used for anything or are they just too unstable to bne of any use? Cheers, Ryan Jones