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

Carbon dioxide has one carbon atom and two oxygen atoms, and a molecular weight of 44 grams per mole ( a certain number of molecules). The oxygen in the air is actually O 2, or molecular oxygen, with a molecular weight of 32. Hence, carbon dioxide has a higher density, or is heavier than oxygen.

www.quora.com/Which-is-heavier-air-or-carbon-dioxide

Carbon dioxide, also known by the chemical formula CO2, has a higher density than the other gases found in air, which makes CO2 heavier than the air. Air is composed of approximately 78 percent nitrogen, 21 percent oxygen, and less than 1 percent of other gases.

www.answers.com/Q/What_is_the_density_of_carbon_dioxide...

What is the density of carbon dioxide compared to air? ... The density is the mass per volume, so you can use the Ideal Gas Law (see Related Questions to the left) to find the number of moles per ...

www.youtube.com/watch?v=TFRlidbpmTk

Survival Doc demonstrates that carbon dioxide is heavier than ordinary air. Carbon dioxide can be used to displace air and oxygen in containers for long term storage of food and other survival ...

www.reddit.com/r/askscience/comments/2jzzlj/if_co2_is...

"Like carbon dioxide, nitrogen dioxide is heavier than air so the highest concentration of gas is typically located at the silage surface, which is the area where a person will be going if they need to enter the silo for any reason." Out in the open atmosphere, there is enough motion in the air to keep the oxygen and carbon dioxide mixed up.

www.askmehelpdesk.com/chemistry/if-co2s-molecular-weight...

Air (nominally 80% nitrogen, 20% oxygen) and Carbon Dioxide are completely miscible in all proportions. Although it's heavier than air (air has an average molecular weight of 28.8 vs carbon dioxide's molecular weight of 44 -- so it's not three times heavier than air), it still dissolves in air and can be dispersed throughout the atmosphere of the world.

www.airproducts.com/products/Gases/.../weight.../carbon-dioxide.aspx

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chemistry.elmhurst.edu/vchembook/imagespdb/123Adensitygas.html

DENSITY Applications with Gases ... The density of several gases is compared to the density of air. Does an object float in air or sink in the air? ... as well as condensing some water vapor in the air to produce a white fog that sinks in the air. This shows that the carbon dioxide and cold water vapor are more dense than air. Table of ...

www.reference.com/science/co2-heavier-air-b69c3fe7a671fbad

Carbon dioxide, also known by the chemical formula CO2, has a higher density than the other gases found in air, which makes CO2 heavier than air. Air is composed of approximately 78 percent nitrogen, 21 percent oxygen, and less than 1 percent of other gases.

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

Air has a molecular weight of 28.966. Gases with molecular weights less than 28.966 are lighter than air. Gases with a weight higher than 28.866 are heavier than air. Air is made up of 78% Nitrogen and 21% Oxygen - Nitrogen has a weight of 28.013 while Carbon Monoxide (CO) has a weight of 28.011. CO mixes with Air as their weights are ...