Emission line for hydrogen?
967786
I'm not going to tell you but look use Saha's equation to find out the energy in ev of each level. Then you can work out the energy value of the jump. It's just a simple bit of maths. But you are wrong so have a think
105461
Neon gas and Mercury vapor are excited by high voltage to emit light, producing the light spectrum for these elements.\n\nThink neon lights and mercury vapor lights.  Both use a high voltage electrical supply.
911178
fusion \n\nIT CONVERTS HYDROGEN INTO HELIUM
1000320
Helium, CO2, Hydrogen and various others.
976264
Are you just looking for nuclear scattering cross-sections?  If you want a mean free path, it's going to depend on the density.\n\nIf you have a better library than I do, you could pursue:\nhttp://cat.inist.fr/?aModele=afficheN&cpsidt=11017441\nwhich might have the cross section.  Searching the web for H(n,n') doesn't turn up as much promising as I had hoped.
55038
Hydrogen production has been common since the late 1800's. A process known as the water gas reaction was once used in the United States and Europe to make a gas composed of hydrogen and carbon monoxide that was burnt in street lamps. It was used as heating gas and for cooking gas up until around the 1950's in the United States. \n\nThis process is still the primary method of production for industrial hydrogen. It is made using coal or coke which is treated with steam.  Many industrial operations have substituted natural gas (methane) for the coal or coke. At present electricity is not commercially used to produce hydrogen, although this is possible. \n\nAll developed and probably many undeveloped countries use hydrogen gas for industrial applications, including metallurgy, glass manufacturing, food and beverages (hydrogenated vegetable oils), electronics, rocket fuel, and as a coolant in power plants.  One important and widespread use of hyrdogen gas is in refineries that produce petrochemicals and to remove sulphur from crude oil that will be refined into gasoline and diesel. \n\nIts use as a fuel is often touted and does have some potential advantages because burning hydrogen does not produce any undesirable combustion products (just water). However, hydrogen is NOT a source of energy, because it has to be produced from other compounds such as water, natural gas, or coal. It is also difficult to compress enough to carry a similar energy potential to the same volume of gasoline. Its primary advantage, if used for transportation fuel, is that it will not pollute the air with anything other than water vapor.\n\nCurrently there are about 75 operating hydrogen refueling stations in the world, located in the US, Canada, Spain, UK, India, Australia, Japan, Korea, and quite a few other countries. There are about 150 more in the planning stages worldwide. You can see this on a map here:\nhttp://www.h2cars.de/overview/index.html\n\nOne of the big proponents of hydrogen fuel usage has been Shell Oil Company. You can find lots of information on the Shell Hyrdrogen webpage:\nhttp://www.shell.com/home/Framework?siteId=hydrogen-en&FC2=/hydrogen-en/html/iwgen/leftnavs/zzz_lhn2_0_0.html&FC3=/hydrogen-en/html/iwgen/about_shell/who_we_are_1208.html
504628
you'll have a mixture of hydrogen and oxygen
749628
from my chemistry days we would use a 250 ml GLASS beaker and two GLASS testtubes to conduct electrolysis of water but it was only temporary the hydrogen would eventualy escape. now how to keep it pressurized is a little bit harder good luck finding that out.
18683
Look at your periodic table. \n\nHydrogen - 1s1\nHelium - 1s2\nLithium - 1s2 2s1\nGo to Neon - 1s2 2s2 2p6\nArgon - 1s2 2s2 2p6 3s2 3p6\nKrypton - 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6\n\nSo, let's say you need Silver (Ag)\n[Kr] 5s2 4d9\n\nIt's perfectly acceptable to use a noble gas in brackets to represent the configuration.\n\nI hope this give you an idea how to write it all.
534537
1 Hydrogen 2 Helium 3 Lithium 4 Beryllium 5 Boron. 6 Carbon 7 Nitrogen 8 Oxygen 9 Fluorine 10 Neon
699109
Peter B has it right -- atomic absorption will do elemental analysis.\n\nAtomic emission spectroscopy is another tack, though a bit more challenging.
937754
Something involving atomic spectra.  For example see\nhttp://www.fas.harvard.edu/~scdiroff/lds/QuantumRelativity/StreetLampSpectra/StreetLampSpectra.html
818868
I suspect this refers to how flourescent light bulbs generate a quasi-continuous spectrum as opposed to the discrete emission lines like other self respecting plasma discharge tubes.  \n\nHere is a website that has several pages on Flourescent Lamps:\n\nhttp://home.howstuffworks.com/fluorescent-lamp.htm\n\nThe first two or three are the ones useful to you.  Also there are several links on the last page under More Great Links that will help you in your researches.  Happy hunting!\n\nBTW: This reeks of an intro science class lab write-up question.  TAs at help desks or profs during office hours can help a great deal more effectively than something like yahoo answers, if you want to truly understand.
650823
Carbon, Hydrogen, and Oxygen.
188339
Yes. Starting from hydrogen, every element is produced inside stars by nuclear fusion. It's a cascade process: light elements join to form heavier elements, all the way down from hydrogen.
459470
they are within the visble range;\nThe series of lines in the hydrogen spectrum associated with transitions to or from the first energy level or ground state. It lies in the ultraviolet (Lyman-alpha at 1215.67 Å; Lyman-beta at 1026 Å) with a series limit is at 912 Å. The He II Lyman lines have almost exactly one-quarter the wavelength of their hydrogen equivalent (He II Lyman-beta, 303.78 Å; He II Lyman limit, 227 Å.)
601656
are  you doing some kind of project on fuel cells?I did a project on hydrogen 3 years ago and had the same problem .What i did at the end was made the design look like a fuel cell(the pem and catalysts) kept some normal cells underneath it and connected it to a bulb.Believe me , everyone thought it was a real fuel cell