How is Oxygen made (How is it Cleaned), and how do they get it into the containers?
551286
oxygen is made by distilling liquid air. liquid air is regular air cooled to about -200 degrees.  it becomes a liquid.\n\nthe oxygen doesnt need cleaning,  the distillation process removes any impurities.\n\noxygen is put into the cylinders by a machine similar to a super heavyduty air compressor.  the oxygen in a full cylinder is at about 2000 psi.
1123554
Everything we use is pretty much a compound. We breath O2 (oxygen, let out CO2, we use NaCl ot table salt. We also use more complicated things such as Na2(H2CO03) or Baking soda.
28721
Googling around to equipment manufacturers, what I'm finding makes it look like they are heat sealed, so I'm assuming that it has to be a melting glue. It also has to be non-toxic since it is a food product.\n\nThe site below has fill-your-own bags that are pre-glued and sealed with and iron.
315284
hydrogen sulfide, carbon monoxide, and carbon dioxide.  Plus, you have to be concerned that there might be no oxygen in the air.\n\nEntering a sewer should be left for people trained in doing "confined space" entries.
761497
1) The first one is wrong on the last person who answered, O2 weighs 32g/mol because there are 2 O's in it, 16 each.  So in 1.33x10^4 (13,300mol) you have 4.256x10^5g of O2 (425.6kg).\n\n2) Recognize that hydrogen, oxygen, and chlorine are diatomic gasses, so they always occur in pairs (H2, O2, Cl2).  Others like this are nitrogen (N2), fluorine (F2), bromine (liquid @ room temp. Br2) and Iodine (solid at room temp, I2).  So your equations would be:\n\n2H2+O2-->2H2O\nH2+Cl2-->2HCl\n\n3) PV=nRT and solve for n, number of moles.  Put everything in correct units, liters, atmospheres, moles, and kelvins, and R is a constant R=0.0821 L*atm/mol K.  Kelvin temp=Celcius temp +273\n\nSolving for n:\nn=PV/RT=(1.09atm)(0.942L)/(0.0821L*atm/mol*K)(287K)\nn=0.0436 mol\n\nSo, when we usually want to know a number of moles given a mass and having a molar mass we can look up, we say,\nn=mass/molar mass\n\nin this case, we need to find molar mass, so:\nmass/n=molar mass\n3.17g/0.0436mol=72.71g/mol
969404
Enough oxygen should leak in from around the edge of the dish. Do they have food and water (wet food)?
596901
several things.  batteries....cleaning agents....emulsifiers..mix it with Nitric acid....you get Nitro Glycerin....which....you can't do at home.  hahhahaha
232626
Several companies make packs that generate CO2 and N once opened.  They also bind atmospheric oxygen (O2).  If you plate your specimen on an anaerobic media, then place the media in an airtight container with one of these packs, you should acheive the appropriate environment. (You can use an anaerobic indicator to make sure that you've acheived the right air mix.)\n\nWhile plating the organisms, be sure to be quick.  Some organisms are killed by O2, so the longer it takes you to plate them, the more chance there is for O2 to get in and damage them.
891771
YOU KNOW THAT OXYGEN IS COLOURLESS AND ODOURLESS SO YOU CAN'T SEE IT AT THE TIME OF ITS PRODUCTION DURING PHOTOSYNTHESIS;THEREFORE ITS EXPERIMENT IS CARRIED OUT UNDER WATER BECAUSE IN WATER YOU CAN SEE OXYGEN BY FORMATION OF BUBBLES.
1043158
What about that oxyclean stuff???
491213
Those 'oxygen enriched water' machines a scam. They are a way to take money off stupid people.\n\nNo, the human body can not absorb the oxygen present in water. Well, that's not quite true. You could absorb the oxygen in water if you breathed it in. Then you would drown. But if you are just drinking the water or bathing in it you can never absorb the oxygen in it.
835422
Hydrogen, H2O one of mans greatest needs\n\nFor more go to :\nhttp://en.wikipedia.org/wiki/Oxygen
468302
they oxidize. they are positive (+2, +3....), so have empty spots in their electron shell.  they want to stabilize, so absorb some electrons.  oxygen has -2, they go together and stabilize.\nmetals are reactive in pure metal form, like pure sodium metal. so they are usually submerged in a liquid, or kept in with another gas. like pure sodium metal is submerged in kerosene (i think, kerosene)
834758
If you don't need something exact, just take the air off the top of a container of bleach.  At ppb level if you need something exact, you will need to get a compressed gas company to make it for you.
28516
Breath them in one at a time for 5 min each.  If you die it was CO2 if you're alive it's O2.\n\nor fill 2 jars with the different gasses. stick a lit candle in them. if the candle goes right out its CO2 if it stays lit its O2.
732892
It is grabbed from the CO2 in the air.  Protosynthesis involves combining carbon dioxyde from the air with water to produce sugars and release oxygen.
871002
Many oxygen bars use a concentrator, which filters out the nitrogen and other gases in the air circulating in the room, and then delivers the concentrated oxygen, about 95 percent pure, through a hose at a continuous flow rate. But oxygen users inhale the surrounding air along with the oxygen pumped through the nose hose, which decreases the concentration. The concentration is further decreased when oxygen is pumped through an aroma. According to one oxygen bar supplier, the customer gets less than 50 percent pure oxygen.\n\nFor further reading please visit: -