a gas that can be collected over water?
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One way for gasses to be collected is over water, but this can only be done with gasses that are insoluble or just slightly soluble in water, otherwise they would dissolve and you wouldn't be able to collect them. For example: carbon dioxide, oxygen, and hydrogen.
437743
Once submerged, the body stays underwater until the bacteria in the gut and chest cavity produce enough gas—methane, hydrogen sulfide, and carbon dioxide—to float it to the surface like a balloon. (The buildup of methane, hydrogen sulfide, and other gases can take days or weeks, depending on a number of factors.)
1011263
Syngas and water gas are used as fuel gases. Syngas is a product obtained from gasification of carbon-containing materials such as coal. Water gas is produced from syngas. The main difference between Syngas and water gas is that Syngas is composed of carbon dioxide whereas water gas has no carbon dioxide.
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A CO detector responds to carbon monxide - we wouldn't expect to find that in sewage; But it might. Depending on the level, methane may set off some CO alarms.
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['carbon dioxide.', 'methane.', 'oxides of nitrogen.', 'ozone.', 'water vapor.', 'ammonia.', "argon (the most abundant trace gas representing about 0.934% of the Earth's atmosphere)"]
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Ocean dissolved gases. Seawater has many different gases dissolved in it, especially nitrogen, oxygen and carbon dioxide.
1099563
There is a neat property that applies to any gas that a 22.4 liters of it at STP (standard temperature and pressure) contains 6.02214199 x10^23 molecules of said gas.
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Argon, an element found in relative abundance in the Earth's atmosphere, is not a greenhouse gas because, like oxygen, nitrogen and other gases, it is largely transparent to the wavelengths of light responsible for trapping heat.
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The atmosphere is like a blanket around the Earth -- and is made up of 78% nitrogen, 21% oxygen, 0.9% argon, 0.03% carbon dioxide and trace amounts of other gasses. One of these gasses is water vapor, which is its most variable component.
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Gas fittings are specifically designed for use with gases, such as flammable propane or hazardous phosgene. These types of fittings have a reverse thread; meaning, the threads are cut in the reverse direction from all other fittings so that gas lines cannot be connected to air lines, water lines, or vent lines.
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['Overview.', 'Carbon Dioxide.', 'Methane.', 'Nitrous Oxide.', 'Fluorinated Gases.']
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Fish are sensitive to sudden, dramatic changes in water pressure or temperature, and many municipalities aerate the water supply -- if you use tap water from such a supply, the aerated water can change the pressure enough that it forces gas bubbles out of the fish's bodies, out onto their sides.
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The bubbles that are seen rising out of the water are the carbon dioxide gas. The chemical equation for the reaction is: 3NaHCO3 + C6H8O7 → C6H5Na3O7 + 3CO2 + 3H2O. Sodium citrate is an antacid, which means it helps to neutralize stomach acid.
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Oxygen is reactive and will form oxides with all other elements except helium, neon, argon and krypton. It is moderately soluble in water (30 cm3 per 1 liter of water dissolve) at 20 Celsius. Oxygen can be separated from air by fractionated liquefaction and distillation.
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Ozonators have the potential to perform really well, but are not ideal or practical for residential pool owners. Ozone has a very short half life. It cannot be stored, only used soon after it is produced.
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Once we do that, we get rid of the grams of water. We find moles of water. All you have to do is just divide 75 by 18 and you'll get 4.17 moles of H2O.
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A gas cylinder is a pressure vessel for storage and containment of gases at above atmospheric pressure. High-pressure gas cylinders are also called bottles.