Credit: RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA/SCIENCE PHOTO LIBRARY

Caption: Demonstration of the differing densities of gases, showing dry ice (solid carbon dioxide) rapidly subliming after room temperature water was poured on it. The resulting cloud of carbon dioxide rises and forms a layer in the tank. The tank is half full of the very dense colourless gas sulfur hexafluoride (SF6). Carbon dioxide is less dense than this gas, but more dense than air. As such, it rises rapidly through the SF6, and forms a layer on its surface. Strictly the white fog is not carbon dioxide itself, but water in the air condensed by the cold.

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Keywords: air, b/j reaction, beaker, bj, boiling, carbon dioxide, chemical, chemistry, cloud, clouds, demonstration, dense, densities, density, dry ice, education, educational, gas, gases, gasses, gloved hand, j/l reaction, jl, lab, laboratory, physical, physics, pouring, reacting, science, sf6 sulfur hexafluoride, solid, strange, subliming, sumblimation, tank, vapor, vapour, weird

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Gases of differing densities

K004/5658 Rights Managed

Downloadable master

Duration: 00:00:45

Frame size: 1920x1080

Frame rate: 25

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 1.1G

Original

Capture format: Sony FS700

Codec: Apple ProRes 422 HQ

Interlaced: Yes

Please contact Science Photo Library if you require the original, or other formats.

 

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