What are the risks if human exposed in CO2?
370772
CO2 is not toxic to humans, although you could suffocate if the CO2 is in the air at a very high concentration, so that there isn't enough oxygen.  If there is a such a risk in a fire, you should wear a self-contained breathing apparatus.\n\nFire extinguishers should be checked for pressure at least annually.  They should be refilled after every use, even if used just for a few seconds.
243462
What could be harmful to you?
447229
ALL human beings inhale atmospheric air, absorb its oxygen, and exhale carbon dioxide.\nOn the other hand, ALL plants intake atmospheric air, absorb its carbon dioxide, and exhale the oxygen - which proves beneficial to humankind !
435225
--Humans cut down forests and woodlands and plough the soil for agricultural purposes to produce more food. This decreases photosynthesis and there is less utilization of CO2 and so the atmospheric CO2 increases in concentration, hence disturbing the carbon cycle and leading to global warming.\n--Due to the increasing human population, more vehicles are now in use and the car exhaust release more of pollutant gases including CO2, and so the concentration of CO2 in air increases.\n--Excessive combustion of fossil fuels also release CO2 in the atmosphere and increase its concentration. This leads to global warming which has the following effects: (1) Melting of polar ice caps due to increased temperature, resulting in floods. (2) Evaporation of water from water bodies, altering the rainfall pattern and climatic conditions. (3) More evaporation of water from the soil, leading to drought and famine.\nHowever, and increase in temperature increases the rate of photosynthesis. Hence more of 02 is evolved and the cycle can be brought back to normal.
1153335
barium acetate and carbon dioxide and water
633274
oxygen is removed and replaced by co2
1117490
It can be linked to exposure to chemicals and various toxins.
423010
Carbon Dioxide is always a product of combustion, never a reactant.  Adding CO2 to a fire/explosion would only every suppress the reaction, not promote it (according to LeChatelier's principle).  The only "explosions" you'll get with CO2 would be pressure based (release of pressurized gas), not chemically based.
935950
Carbon dioxide does not conduct electricity and can be used on electrical fires.  In theory, if you had some kind of metal fire ("Class D") that was electrically energized,  you would not want to use it (carbon dioxide will chemically react with most, if not all, burning metals and will make the fire worse).
427297
1: will release carbon dioxide gas from carbonates\n\n2: will produce hydrogen when reacted with metals such as iron, zinc etc.
286343
The effects of carbon monoxide in parts per million are listed below:\n\n    100 ppm (0.01%) Slight headache in two to three hours\n    200 ppm (0.02%) Slight headache within two to three hours\n    400 ppm (0.04%) Frontal headache within one to two hours\n    800 ppm (0.08%) Dizziness, nausea, and convulsions within 45 minutes. Insensible within two hours.\n    1,600 ppm (0.16%) Headache, dizziness, and nausea within 20 minutes. Death in less than two hours.\n    3,200 ppm (0.32%) Headache, dizziness and nausea in five to ten minutes. Death within 30 minutes.\n    6,400 ppm (0.64%) Headache and dizziness in one to two minutes. Death in less than 20 minutes.\n    12,800 ppm (1.28%) Death in less than three minutes.
222630
Pros: very abundant\nVersitile (can be converted to gasoline if need be)\nCheap\n\nCons: dirty (contains sulfates that when burned cause acid rain)\nIncomplete combustion creates carcinogens\nWaste product CO2 is a green house gas.
278365
hi, \nthis site estimates ~1kg per day, but that is highly dependent on the person's activity level.\n\nsee the question " Q. Should we be concerned with human breathing as a source of CO2?" about 1/3 of the way down.\n\nhttp://cdiac.ornl.gov/pns/faq.html\n\ncheers!
730966
it depends how long they have been inhaling this very dangerous but un-detected fuel. (it has no smell) There is several stages as to how it affects the body; When someone has been exposed for a long time, it fills their lungs, so even when inhaling fresh air they have breath out the excess of the carbon monoxide. Then once there is a continual flow of carbon monoxide in the lungs, it can cause difficulting breathing and therfore brain damage. in some cases, the body cant handle the amount of carbon monoxide in it and tries to clear the airways by vomitting, but unfortunately when the casualty is unconcious, releasing this vomit is not as easy as the body intends, and this is a common factor that plays a role in carbon monoxide poisoning. Remember that it will affect small children quicker then an adult, due to the size of the internal organs, making the process quicker. Sad, but very true.
1061823
Several points can be made but two will suffice for now.\n\n1. Carbon based does not only apply to humans but to every part of the biosphere (living part of the environment). Our whole ecosystem is based on carbon!\n\n2. Carbon IS as essential to life as Oxygen. What is the gas we give off when we exhale? CARBON dioxide! We must take in carbon to passit out.\n\nOur bodies "burn" sugars to get the energy our bodies neen to run. Guess what the main element in sugar is? Yes, you're right! CARBON! Carbon is in every cell of our bobies.
646405
Be careful.\n\nThat environment can be dangerous.
11177
Not really, no.  CO2 is carbon dioxide, and sodium is a light metal that usually exists as a highly soluble cation.