Is carbon monoxide heavier or lighter than air?
914149
Air is a mixture (not combination of basically 2 gases: oxigen (O2)and nitrogen (N) in its molecular form. Carbon monoxide (CO) is a molecule made of 1 carbon atom (6) + 1 oxygen atom (8) = 14. Therefore, CO is heavier than N, which molecular weight is just 7, but slightly lighter than the O2 molecule, that wheighs 16.\n\nIn my opinion, a CO detector could be placed anywhere at the height of adult human nostrils, since it's a substance easily mixable with air.
54895
To be precise, the answer is no. Do u noe why? The mean mol wt of air is 29 whereas that of CO is 28.\n\nlet me show u how i get these answers:\nC=12,O=16,mol wt of O2=32g/gmol,mol wt of N2=28g/gmol\nmol wt of CO = 12+16\n             =28\nas for air, by common sense, we know that air is made up of O2,N2, and other gases,rite? As the mol composition of other gases are very negligible(<1%), we assume air is only made up of O2 and N2. Air consists of 21mol% O2 and 79mol% N2.\n\nlet's take a basis of 100gmol(or 100mol)\nmoles of O2=21gmol\nmoles of N2=79gmol\nmass of O2=21X 32g/gmol\n          =672g\nmass of N2=79X28g/gmol\n          =2212g\ntotal mass= 2212+672\n          = 2884g\naverage mol wt of air=total mass/total moles\n                     =2884g/100gmol\n                     =28.84g/gmol\n                     =29g/gmol(whole no.)\n\nsince the ave mol wt of air is greater than that of CO, so aCO is not heavier than air,instead,slightly lighter than air.\n\nDoes it answer ur question?
425869
Definition of Carboxyhemoglobin\n\nCarboxyhemoglobin: Hemoglobin that has carbon monoxide instead of the normal oxygen bound to it. Carbon monoxide has a much great affinity than oxygen for hemoglobin. Carboxyhemoglobin is formed in carbon monoxide poisoning. The source of the carbon monoxide may be exhaust (such as from a car, truck, boat or generator), smoke from a fire, or tobacco smoke. The level of carboxyhemoglobin is a measure of the degree of carbon monoxide exposure. \n\nThe presence of carboxyhemoglobin in the blood is called carboxyhemoglobinemia. Carboxyhemoglobin is also known as carbonmonoxyhemoglobin and carbon monoxide hemoglobin.
344631
As far as the weight is concerned they are same.  But in a constant volume situation yes the hot air would weigh less then the cold air.  Hot air expands and therefore rises up in the atmosphere.
439396
Not from the fertilizer.  Acetylene has a specific gravity (compared to air) of about 0.9, which means it is lighter, but not by a lot.  Its explosive limits are from 2.5% to 81% in air, which is the primary hazard.  If the fertilizer is ammonium nitrate, I'd make sure there's enough distance between the two facilities (or a wall).
1103330
My thought is air as well. Air is composed of around 2/3s part of Nitrogen. Oxygen is a much smaller amount
686605
Helium is lighter than air and cause the ball to float away.\n\nCarbon Dioxide is heavier than air so the ball would not bounce so well and it would be harder to kick.\n\nOxygen is lighter than air, but the difference is so small you wouldn't notice, no more that a ball being slightly over/under inflated.\n\nSince air is the cheapest, at a cost of nil, I suggest you put that in you balls.
17452
Hot air is less dense than cold air, assuming that volume is held constant, because the molecules in the heated air move more and faster than in cold air.  Think about a room filled with people.  If the people move around quickly (as molecules in heated air), then the people will spread out more and make more room between eachother (which would be lower density).  Since the hot air is less dense, and more dense objects are "more affected" by gravity, then the warm air is "lighter".
815229
What are the symptoms of carbon monoxide poisoning?\nThe initial symptoms are much like the flu and include headache, dizziness, drowsiness, fatigue, shortness of breath, nausea and vomiting. Symptoms may progress to fainting, unconsciousness, heart problems and even death. Many people die in their sleep, never realizing that carbon monoxide levels have risen to a dangerous level. The severity of the symptoms depends on the concentration of the carbon monoxide, the duration of the exposure and the size of the area. If a person is in a small, enclosed area without ventilation, they are more likely to have a more severe case.\n\nHow is carbon monoxide poisoning diagnosed?\nInfants, small children, pets, pregnant women (more specifically the unborn baby) and people with heart disease are at greatest risk for carbon monoxide poisoning. If a pregnant woman is exposed to carbon monoxide, the baby absorbs more carbon monoxide from mom's blood than mom does herself. Mom may not have many symptoms but the baby may be seriously affected. Pregnant moms must be very careful to prevent exposure. Carbon monoxide is diagnosed by a special blood test. It is not detected by routine blood tests. If you suspect carbon monoxide poisoning, you need to be tested while you are ill. Carbon monoxide does not stay in the blood stream long. If you are tested when you do not have symptoms, chances are that the carbon monoxide will not be detected. Treatment depends on the amount of carbon monoxide found in the blood and the symptoms.
1165094
It would depend on the amount of Helium within the truck.\n\nJust because Helium is lighter (less dense) than air does not mean that it does not have mass (and thus weight).\nFor a given volume of Helium and air at the same pressure, the Helium would have less mass.  However, if one pressurized the Helium and/or had enough moles of the gas, one could actually be increasing the overall weight of the car by adding the Helium.\nIn orer to lighten the car, the idea would be to displace the surrounding "fluid" (air) but at the same time, by adding as little additional mass as possibe.\n\nAny effects of Helium upon the overall weight of the vehicle will be totally negligible using any normal amount of Helium.  One would need a small blimp's worth of Helium to have any real effect.
554015
The common answer to this question for a hot air balloon is "hot air is lighter than cold air." What does this really mean?\nIt means that hot air is less dense than cold air. Remember that density equals mass divided by volume. The substance with a lower density will float on top of another with a greater density. When the air inside a hot air balloon is heated, molecular motion increases, and the volume of the balloon expands. Therefore, its density decreases. The balloon will float until the density of its gas equals the density of the surrounding air. The density of the air decreases as altitude increases; because of gravity; gas molecules are more sparse at higher elevations. The air is "thinner" at high altitudes. The pilot can increase his altitude by heating the gas inside the balloon, thus decreasing its density.
629297
Answer is DRY AIR!!!\n\nTo see WHY HUMID AIR IS LESS DENSE THAN DRY AIR, we need to turn to one of the laws of nature the Italian physicist Amadeo Avogadro discovered in the early 1800s, which you might recall from your high school chemistry class.\n\nIn simple terms, Avogadro found that a fixed volume of gas, say one cubic meter, at the same temperature and pressure, would always have the same number of molecules no matter what gas is in the container. Most beginning chemistry books explain how this works. \n\nImagine a cubic foot of perfectly dry air. It contains about 78% nitrogen molecules, which each have an atomic weight of 28. Another 21% of the air is oxygen, with each molecule having an atomic weight of 32. The final one percent is a mixture of other gases, which we won't worry about. \n\nMolecules are free to move in and out of our cubic foot of air. What Avogadro discovered leads us to conclude that if we added water vapor molecules to our cubic foot of air, some of the nitrogen and oxygen molecules would leave — remember, the total number of molecules in our cubic foot of air stays the same. \n\nThe water molecules that replace nitrogen or oxygen have an atomic weight of 18. They are lighter than both nitrogen and oxygen. In other words, replacing nitrogen and oxygen with water vapor decreases the weight of the air in the cubic foot; that is, it's density decreases. \n\nWait a minute, you might say, "I know water's heavier than air." \n\nTrue, liquid water is heavier, or more dense, than air. But, the water that makes the air humid isn't liquid. It's water vapor, which is a gas that is lighter than nitrogen or oxygen.\n\nCompared to the differences made by temperature and air pressure, humidity has a small effect on the air's density. But, humid air is lighter than dry air at the same temperature and pressure
820473
Carbon dioxide is not weightless\nIn fact is has \n\n12g in carbon, and in oxygen it has 12, but as there is 2 carbon atoms there is 16g in oxygen\n\nSo 12+16*2 = 44g.\n\nHow do i know this? Look at the periodic table.
723582
CO2 (carbon dioxide) is what we breath out \nCO (carbon monoxide) is what cars emit. It can be deadly because if it gets into your body, it takes your oxygen so it can become carbon dioxide.
888307
In the absense of additional information or context the basis for this question rests in the size of the molecule. The smaller molecule will have a greater rate of diffusion than the larger molecule.  In general size of molecules is directly proportional to their molecular weight. When all molecules are the same molecular weight you will need to consider which ones are smaller based on the attractive forces between them. \n\na)  CO and N2 - N2 has a triple bond (the Ns are held closely to each other therefore small) and is very stable and I would bet that it will diffuse faster than CO since its actual size is smaller and because it is stable it is less likely to react with any medium through which it is diffusing.\nb) No2 and SO2 - this is likely to be based on size with the larger SO2 diffusing more slowly.\n\nHope this helps.
931678
The density of helium is 0.1786 g/L, and the density of air is 1.2 kg/m^3.  With proper unit conversion, the density difference is 0.064lb/ft^3.  Therefore it takes 15.7 ft^3 of helium to lift one pound.
595563
Yes, it will weigh less. Fill ANY container with lighter-than-air gas, and it will weigh less.\n\nException: If the gas is under high pressure, such as in a pressurized tank, the container will actually weigh MORE.\n\nReason: Gas is compressible. If helium were half the weight of normal air, then helium under twice the pressure will weigh the SAME AS normal air under normal pressure. So if the pressure on the helium were increased, the container will weigh MORE.