What would I die from if was locked in an airtight room, too little oxygen or too much carbon dioxide?
The volume of carbon dioxide you exhale is approximately equal to the volume of oxygen you consume. This means that in a closed room, the oxygen concentration will drop at approximately the same rate the carbon dioxide concentration rises. For the purposes of the experiment, the air in the room is assumed to contain 79 percent nitrogen, 21 percent oxygen, and negligible other components. (air normally contains around 0.04% CO2, which isn’t a lot).
You’re sitting in your airtight room and breathing. The oxygen level is slowly dropping and the carbon dioxide concentration is slowly rising. You’ll start to notice a problem around the point where the CO2 exceeds one percent. At this point, the oxygen concentration is still 20 percent, equivalent to living anywhere in the US that’s not right on the ocean. Air containing 1% CO2 is sufficient to cause the air to feel stuffy and make you feel dizzy. Any increased activity is going to make you breath rather hard.
At the point where the CO2 concentration exceeds 5%, you’re probably beginning to feel pretty ill, and may be having trouble thinking clearly. You’re probably not unconscious, but you can’t exert yourself at all without extreme fatigue, even though the air still contains 16% oxygen, which is about what you’d get living in Boulder, Colorado. If you’d just moved there and tried to go for a run before your body had acclimated to the altitude, it might leave you feeling rather short of breath, but if you slowed back down to a walk you’d be fine.
At somewhere around seven to ten percent CO2, you’re unconscious, and if you don’t get fresh air soon, you’re going to die. Let’s assume you’re really resilient, and it takes the full ten percent concentration to kill you. You probably died a while ago, but it makes the math even easier. The air in the room has lost almost half of its oxygen, meaning if it wasn’t for the CO2, you’d feel like you were climbing a rather tall mountain, for example most of the way up the side of Kilimanjaro, and if you weren’t a trained high altitude mountaineer in good shape, you’d be having a lot of trouble continuing. But, remember that people HAVE climbed Kilimanjaro, and even taller mountains, and survived.
So, the increase in CO2 is going to be what kills you.
So answer = c02 poisoning like I said ^_^