what is the normal phase of oxygen?
373071
On Earth, its a gas- In the universe as a whole, it is likely a plasma found in stars.  On large planets such as Jupiter, likely in a liquid state.  The conditions on Earth are for from normal for the universe in general.
737804
First, you cannot directly compare partial pressure of oxygen in the lungs to oxygen in the blood since the phases are different (gas in gas vs. gas in liquid).  You can use Henry's Law to get a value that you can directly compare\n\nP = H * X\n\nAnywho, the partial pressure of oxygen in the lung is higher than the "partial pressure" of oxygen in blood.  Becuase of this, there is a driving force from the lung to the blood which causes oxygen to diffuse into the blood.\n\nThe exact opposite is true for carbon dioxide, meaning CO2 leaves the blood and goes to the lung to be exhaled.\n\nRespiration is cool!
501986
The oxygen is collected by the red cells in the alveolis (in the lungs), they travel all the way trough your body providing oxigenation to all the extremities. When the blood contains oxygen its colour turns pure red but when it caries Carbon Dioxide it turns darker.
745142
aerobic rxns use oxygen...anaerobic is w/o oxygen.
852821
7.35-7.40 is the normal blood ph. Lower or higher than this may result in acidosis and alkalosis.
829141
Higher partial pressure of O2 in atmosphere that that present in the blood.\n\nRemember, blood in the lungs will be DEOXYGENATED!
336167
oxygen and carbon dioxide
105897
Boiling point of oxygen 90.20 K (-182.95 °C, -297.31 °F)\n\nadditionally Melting point is54.36 K (-218.79 °C, -361.82 °F)
885955
It means that you are taking in 91% of oxygen into your blood, which is a little low.  A normal pulse ox is 95%-100%
1038791
I found an answer here:\nhttp://www.auburn.edu/communications_marketing/askaubie/101205.html\n\nOne estimate indicates that a large tree whose trunk is 39 inches in diameter at breast height releases 0.67 pounds (0.31 kilograms) of oxygen per day.  For comparison, according to NASA, a typical adult would use 1.85 lbs (0.84 kg) of oxygen gas per day in the process of respiration. \n\nSo you would need 3 trees for one person. And double that if you take into account that the tree only produces oxygen during the day.
879683
Yup, oxygen oxidises our bodies. As we are carbon based lifeform, we lose carbon when we breathe out - hence, carbon dioxide.
1039404
Lack of oxygen in your system!
452542
well, i don't know  where to find a quiz, however i am a respiratory therapist and use these everyday\n\nhere are some ideas\nokay normal ph in your body is 7.35-7.45 <7.4 is acidic, and >7.4 is basic (alkalotic)\n\nthink of hco3 (bicarb) your buffer, it raises the ph\n\nthink of co2 acidic.. it lowers the ph\n\no2 levels are normal if they are >80 (remember copd pts will have 50's and that will be normal\n\nok... \nexample 7.30ph, 55 pco2, 80 po2, and 29 hco3\nthat is an acidic ph.. its acidic because the person isn't blowing off co2, the normal co2 is 35-45, its 55\n\nthe hco3 isn't raised up high enough to buffer the acidity.. so the blood gas is uncompensated, meaning the hco3 and co2 will usually compensate for one another.\n\nthis gas is an u ncompensated respiratory acidosis, with normal oxygenation\n\nnext gas 7.38ph, pco2 is 50, hco3 is 40, and po2 is 50\nthis is a normal ph, with elevated pco2, the ph is an acidic ph.. however in normal level, notice the hco3 is elevated.. it compensated for the raised co2\nalso notice the po2 this is normal for co2 retainers (copd patients). \n\nthis gas is a compensated respiratory acidosis with hypozemia (however normal for the copd patient)\n\nokay next gas\n7.50ph, with 35pco2, hco3 42 po2 is 70\nthis is an uncompensated metabolic alkalosis.. the  pco2 is normal.. not compensating..\n\nnext gas 7.20ph, 5 pco2, hco3 10\nthis is an partialy compensated metabolic acidosis.. meaning that the pco2 is trying to make up for the loss of bicarb.. this is a blood gas that you will find with a diabetic keto acidosis patient.\n\nnext gas 7.48ph, pco2 25 hco3 20\nthis is a gas that is uncpmpensatted respiratory alkalosis.. t his patient might have a respiratory ailment that is causing them to hyperventalate... blowing off too much co2\n\nthe hco3 will trend down to compensate\ni hope this helped
834076
Air is about 20% elemental O2.\n\nhttp://www.mountainflying.com/oxygen.htm This site says 21%\nAnd this site:http://www.pubquizhelp.34sp.com/sci/air.html has a nice chart on it.
975044
Every time you exhale, you breathe out most of the air you breathed in. While the air is in your lungs, oxygen travels from air to blood and CO2 from blood to air, in each case moving naturally to where it is less concentrated.\n\nHow long it takes the average oxygen molecule from being absorbed to being breathed out again as part of a carbon dioxide molecule is a really good question - I have no idea if anyone has even calculated it, but we can try.\n\nMost people pass out if their blood oxygen level drops below about 80% - and most people can hold their breath for maybe 4-5 minutes (the record is almost 9 minutes by Houdini, but that's someone trained and a bit freakish). That implies you use 20% of the oxygen in, say, 5 minutes - so it would take 25 minutes to use it all, if that were physically possible.\n\nBTW, I'm prettty sure it's 8-9 pints of blood. The normal O2 reading in arterial blood is around 10-13 kPa, but I'd have to admit I don't know how to convert that to a mass (or free volume) of oxygen.\n----\nOoh, here you go: arterial blood contains about 20ml of oxygen per 100cc. Your blood volume is about 5 litres, so that would mean your body contains rather less than a litre of oxygen (because not all of your blood is fully oxygenated).
24553
Oxygen is is difficult to liquefy, but has a boiling point of -183 degC, and the liquid is pale blue in colour and is appreciably magnetic. At still lower temperatures, light-blue solid oxygen can be obtained, which has a melting point of -218.4 degC.
394526
At one atmosphere the alveolar partial pressure of oxygen (Po2) is around 105 mmHg. Ambient air has a Po2 of 152 mmHg.(Alveolar oxygen is about 69% of atmospheric) (Po2 = Patm x 20/100) as oxygen makes up about 20 percent of the dry atmospheric air.  Assuming (1) that the concentration of oxygen is the same at 685 mmHg and (2) that the same ratio of oxygen is in the lungs. Then Po2 = 685mmHg x 0.20 x0.69 =94.5mmHg with 3 sig figs.