insane_alien

Woelen: i have nothing wrong with people who have the skills doing experiments wit dangerous stuff. its just the k3wls and inexperienced i have a problem with. I don't like to see or hear of people getting hurt or dead while trying to do a chemistry experiment. it kinda puts a bad light on home chemistry.

Could be worse still, it could be HOT fluorine!

maybe the codecs got corrupted? try installing a new codec library.

This seems like the right place to look for help about this. When ever i log on to SFN on any computer(just tested it on the uni computer) and it goes back to the home page i get automatically redirected to http://www.scienceforums.net/profile.php this addy produces a 404. every time i try to access the home page this happens. its really starting to **** me off. i tried deleting cookies etc but since it also doesn't work on the uni computers, i doubt its that. Any ideas/solutions?

What sort of concentrations are you talking about? the concenration your likely to find in the average swimming pool or the levels where it was used in gas attacks on the trenches in WWI. It's a pretty toxic substance since its so reactive. if inhaled it literally rips the cells of your lungs apart. there are even recorded cases of victims coughing up parts of their own lungs in some sick nazi experiment.

6 days and 3 hours. NEVER again. unless its the end of the world or something srious like that.

heh. its not that heavy. i've went to a whole 5 math lectures this year. all of them to find out when the tests were. averageing 89%

abskebabs: You should be able to pick a physics related elective(if you get the chance to pick electives) in the university you end up in. personally i didn't pick that elective because it was all about waves and i suck at waves. ChemEng is a good course. hope you get in.

seeing as your still typing i don't think you have anything to worry about from that lapse in safety.

well seeing as te article doesn't exactly release any technical details or equations and that i am not exactly at the forefront of gravitomagnetic research i can't offer any reliable comment. it does sound good though.

I'm in my first year at uni up in scotland. I worried a bit before i went. But in hindsight there was no need. I assume Sheffield will have a "freshers week" this is great for making friends. and then there will be group work in your classes which will help you make friends. there are 98 people on my course and i get along with every single one of them and i go out with 32 of them regularly am best friends with 3 and sleep with one. You will have too many friends if anything One bit of advice that is guaranteed to get you some friends on the first day: Bring along a pack of cards.

Wow sunspot got one right. Rising moon: It depends on the type of nano technology but why would we need to? we are concerned about making chemicals. these may be very simple(ammonia, sulphuric acid, nitric acid) or very complex(various drugs and polymers). nano technology i think would be more of a electro/mechanical field or closer to biology.

whew for a minute there i thought that you had gone over to the stupid side. I predict that this will bring in an abnormally high number of idiots proclaiming that "their" theory of an electric universe is right and einstein was all wrong. oh well.

just do it with some better ventilation in the future and you'll be fine.

As long as there is a demand for chemicals be it petrochem, hydrogen if we switch to fusion and fuel cells, pharmaceuticals basically any manufactue of any chemicals we'll be needed. since oil is running out i wouldn't be surprised to see the demand for chemical engineers rise since new chemical plants will need to be made to make various petroleum substitutes. the proper term for a chemical engineer is "Chemical and Process Engineer".

Heh just put me in a field.then you'll see excessive sneezing.

I've always known that to be the enthalpy of atomisation. Na+ is Na(I) since Na only has one valence electron any compunds it makes will involve Na(I). Enthalpy of ionisation IIRC. Br -> Br- is enthalpy of affinity ... i think.

NaCi? there is no such thing as Ci maybe you mean Cl if so then all you have is a chunk of salt. common table salt.

For the love of all that is crunchy! if we give you a warning on here its not a 'yeah, you might burn your fingers a bit' warning its a 'You could end up as a puddle of organic material!' warning.

i would think that hydrogen formed first but helium would follow soon after. i mean it just takes 4 high energy hydrogen-1 atoms to interact in the right way and you get some helium. since the whole universe was hydrogen i imagine this happened pretty quickly.

Well when my hayfever gets going real good i can sneeze maybe 1000 times a day and my heart is in perfect condition. i'm also still a bit chubby so i doubt the "excersise" works. and its proper blow the wall down sneezes

Any concept you've neve seen before can look confusing and complicated. when i was in 1st year of highschool(not sure what the equivalent grade in the american system is. i was 11 at the time) i had a look through the higher chemistry books(16 yrs old) and didn't understand anything in it. Now i'm in university doing a degree in chemical engineering and looking back at higher chem, it seems oh so simple.

And proud of it!

There are a few hydrogen fuel cells about. but they are prototypes. and they'll stay that way until the oil companies can make more from them than they can from the last dregs of oil. Personally i think we should start a gradual swap to hydrogen now. in the words of the 6 million dollar man tv show "We have the technology..."