Oxygen Definition and 376 Threads

Does anyone, by chance, happen to have some good, practical references in the design and preparation of piping systems for use in pure oxygen service? My ASTM references are about as close to worthless as it can get. Thanks.

Does anyone know anything about this? Has any lab prepaired metallic oxygen?

Can you give me some advice on this: ------------ Are you in a position to supply us the below item: Please let me know the price as CFR Bandarabbas Iran. Subject : vertical liquid oxygen tank (lox tank) capacity: 18000_22000 lit working pressure : 17 bar Daily...

Why do scuba divers need oxygen tanks if air is already dissolved in the water? Why can't they just undissolve the trapped gas like when you shake up a bottle of carbonated soda?

I am working on a project of a medical equipment which is supposed to absorb oxygen at a rate similar to the human body. I am looking for a process or a substance that would absorb about 200-300 ml of oxygen per minute. I can't use fire or anything that explodes. I was thinking about iron...

Is this statement right? Let me explain a few things about the chemistry of the atmosphere.There are two types of oxygen up there.O2 and 03.O2 is the result of CO2 bonding with 03.02 is what keeps the Earth warm.and it takes 40 YEARS for CO2 and other cfcs to make its way up into the atmosphere

Just took a chemistry test, had a few I wasn't sure of: When hydrogen and oxygen gas combine to form water vapor, what mass of water forms if 10grams of oxygen reacts completely? 2H_2 + O_2 \rightarrow 2H_2O 10 grams of oxygen is .625 moles, and the stoichiometric ratio is 1:2, so...

Roughly 20% of the molecules in the air are oxygen molecules. The oxygen molecules are needed for life processes in a person's body. What is the probability that in one breath, one might fill his lungs with a volume of air that has no oxygen in it? How does one go about doing this...

O2 is the ordinary form of oxygen, but O3 forms the ozone layer if i recall correctly. Shouldn't O3 be heavier than O2 and thus be located lower than O2 not in the upper atmosphere? told you it was kinda dumb one but it unknowingness (?) bothers me :rolleyes:

Ok, so i know that liquid oxygen is paramagnetic... so is oxygen as well paramagnetic? (seems like a stupid question) if yes/no... would then for instance a flame burn better if i were to hold a magnet next to it? please help, t his is something that has always troubled me

hydrogen peroxide decomposes to form water and oxygen. Its a slow rate of reaction and it takes time to decompose. So we faster the rate of reaction by adding manganese oxide which is a catalyst its function is to faster the rate of reaction . my question is if we doubled the amount of MnO2...

In a tank full of oxygen, how many molecular diameters d (on average) does an oxygen molecule travel (at 1.00 atm and 21.0°C) before colliding with another O2 molecule? (The diameter of the O2 molecule is approximately 3.60 10-10 m.) >> I don't know why webassign is telling me this is wrong...

A sample of glucose (C6H12O6) contains 0.75 moles of Oxygen. How many moles of hydrogen does this sample contain? For this problem I was thinking that you might use some kind of ratio between hydrogen and oxygen, but I didn't quite know what to do with carbon? Thanks! :biggrin:

thinking of a project and was wondering can a jet engine be modified to run on just hydrogen and oxygen as the fuel, or is it too explosive? if not can a pulse jet?

You know how oxygen is released as a byproduct of photosynthesis by plants, how does this affect the amount of oxygen in the air in the winter season in the areas when all plants are frozen ?

i have a multi-part question which is fine except for two areas. 1) how many oxygen molecules traveling at this speed (i already have the speed calculated) are necessary to produce an average pressure of 1.00 atm? 2) calculate the number of oxygen molecules that are actually contained in...

WHy OXygen can react with metal?As i know , oxygen(O2) is bonded by covalent bond and it should be neutral charge. So how can the metal react with oxygen?

On average, how long can a human brain survive without oxigen without being noticably damaged? Thanks.

Now for another question on the same subject You all know how in the human body the oxygen binds to the iron compound inside the hemoglobin. and that carbon monoxide has a 200 to 1 affinity to oxygen within the hemoglobin. But anyway my question is if The Iron inside a cell pulls and holds on...

I remember in 8th grade I was sick the day my class did this, and no one I talk to seems to remember how it was done beyond there was a 9volt battery involved. Does anyone know how water can be separated into hydrogen and oxygen?

Hello, I know I should have knowledge of this, but I can't seem to remember very well what happens in combustion reactions with a very short supply, limited supply, and abundant supply of oxygen. What is the difference? I know complete combustion hands down, but what happens in a problem such...

photosynthetic algae - photosynthesis takes place during daylight, CO2 is used and O2 is released. At night, aerobic respiration occurs, O2 is used and CO2 is given off. If these two processes are in balance with each other (or are they?), how would an algal bloom decrease the O2 level in...

I came across an amazing fuel cell created by Lawrence Livermore National Laboratory. It's actually called a http://www.llnl.gov/IPandC/technology/profile/transportation/UnitizedRegenerativeFuelCell/index.php which has a duel mode. Not only can it produce electricity from oxygen and hydrogen...

Hello people I am currently having problems doing my AS exam paper. Can you please help? The question is: During the cardiac cycle, the pressure in the left ventricle falls to a much lower level than in the aorta. Give an explanation for this difference? I have no idea about this...

i come across this fact. red and white phosphorus are allotropes, but the reaction between white phosphorus with oxygen gives out slightly more heat than the reaction btw red phosphorus and oxygen. P4 (s) [red] + 5O2 (g) --> 2P2O5 (s) delta H = -30.2kJmol-1 P4 (s) [white]+ 5O2 (g)...

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