yes but only the ambient CO2 it is a NITROX mask for elevated O2 between 40 and 60 % the rest is AIR which contains Co2 at atmospheric pressure.. 1 BAR
Addition
Assuming you are talking about some kind of full face diving mask with a regulator attached, you will be rebreathing some gas you have exhaled. So yes, you will be rebreathing CO2 - which will be at a greater concentration as well as a greater partial pressure than the CO2 at atmospheric pressure. But it will be minor amounts. However if you are talking about a hospital type of application then it is a different answer.
nonrebreather more precise and delivers higher concentration Partial Rebreather Mask - Conserves oxygen - Can be administered in concentrations of 40-60% using flow rates of 6-10L - This is useful when oxygen concentrations must be raised - Cannot be used with a high degree of humidity - Not recommended for COPD patients - Should NEVER be used with a nebulizer Non-Rebreaqthing Mask - High concentrations of oxygen can be administered accurately - Oxygen flows into bag and mask during inhalation - Valves prevents expired air from flowing back into bag - Cannot be used with a high degree of humidity
The Aqua lung, invented by Jaques Cousteau, is not sealed around your head, nor does it have a tank. It basically sits on your head, and if you look down you can see the water at your shoulders; There is not a stopper of some sort. The Rebreather is a tank of air with a mask that attaches to your eyes and mouth, and pumps in air, as well as recycles some of the CO2 that you breath out.
Possibly one reason could be to help monitor respiration. This could provide a visual clue to inspiration. But, the reservoir bag is to collect oxygen and thus keep a free flowing "reservoir" of oxygen for the patient to draw from as they inhale all the avilable air within the mask itself. There are exhaust valves located on either side of the face mask to exhale the CO2 and keep from drawing in room-air. Or even rebreathing the CO2.
The air we breath in is roughly 21% O2 and 0.04% CO2 and we breath out air that is 16% O2 and 4% CO2
we breath in oxygen and plants breath co2
The partial pressure of SO4 in a bottle of NO2, CO2, and SO2, is 7.32 atm.
CO2
The greatest partial pressure of CO2 is typically found in the alveoli of the lungs, where CO2 is exchanged between the bloodstream and the air we breathe. This is the point where oxygen is taken in and carbon dioxide is released.
it turns CO2 (which we cant breath in) into Oxygen. Then we breathe out CO2
The chemical formula of exhaled breath is Carbon Dioxide = CO2.
The high partial pressure of CO2 in cells is due to the fact that cells produce CO2 as a byproduct of metabolism. This CO2 diffuses out of cells into the bloodstream where it is carried to the lungs for removal. In contrast, the environment outside of cells has a lower concentration of CO2, resulting in a concentration gradient that drives the movement of CO2 out of the cells.
The chemical formula of exhaled breath is Carbon Dioxide = CO2.