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mtidealer.stratumsites.com/images//COAlarmInstallationHeight.pdf

while Carbon Monoxide (CO) has a weight of 28.011. CO mixes with Air as their weights are approximately the same. The National Fire Protection Association Standard - NFPA 720-2009 states “A.9.4.1.2 The location for effective performance is not generally dependent on mounting height. The density of carbon monoxide is similar to that of air at ...

www.carbonmonoxidekills.com/.../co-detector-placement

When considering where to place a carbon monoxide detector, keep in mind that although carbon monoxide is roughly the same weight as air (carbon monoxide’s specific gravity is 0.9657, as stated by the EPA; the National Resource Council lists the specific gravity of air as one), it may be contained in warm air coming from combustion appliances ...

www.jaymarinspect.com/carbon-monoxide-detector.html

That title is a question I get a lot during home inspections. And this one - Is carbon monoxide lighter or heavier than air? Of course, any time you have gas appliances or a wood-burning fireplace, you should have at least one carbon monoxide (CO) detector in the home.

en.wikipedia.org/wiki/Carbon_monoxide

Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that is slightly less dense than air.It is toxic to animals that use hemoglobin as an oxygen carrier (both invertebrate and vertebrate) when encountered in concentrations above about 35 ppm, although it is also produced in normal animal metabolism in low quantities, and is thought to have some normal biological functions.

www.engineeringtoolbox.com/carbon-monoxide-density...

Online C arbon monoxide Density Calculator. The calculator below can be used to estimate the density and specific weight of gaseous carbon monoxide at given temperature and pressure. The output density is given as kg/m 3, lb/ft 3, lb/gal(US liq) and sl/ft 3. Specific weight is given as N/m 3 and lb f / ft 3.

www.carbonmonoxidedetectorhq.com/carbon-monoxide-heavier-than-air

1. Is carbon monoxide heavier than air? Carbon monoxide has a density that is about 97% that of air under normal room temperature. So, to answer the question, no, it is lighter than air. You would think, then, that it would rise. In real-world conditions, there are a lot of forces that cause the CO to mix rather completely into the air.

scienceline.ucsb.edu/getkey.php?key=2966

This means that carbon dioxide should be about 44/32 = 1.375 times as heavy as an equivalent volume of oxygen. In reality, oxygen gas has a density of 1.429 grams/liter at the so-called standard pressure and temperature (basically room temperature and atmospheric pressure) while carbon dioxide has a density of 1.977 grams/liter.

encyclopedia.airliquide.com/carbon-monoxide

Carbon monoxide is formed from the combination of a carbon atom with an oxygen atom. Not only flammable, it is also very hazardous since it is very toxic and odorless. It is produced, among other ways, from incomplete combustion due to lack of oxygen. It can therefore cause domestic accidents due to poorly maintained heating systems.