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The PCV or positive crankcase ventlation valve does as it is named. It will remove harmful gases from the engine. Also, you can find breather caps on the valve covers, this also helps to remove and fumes from the crankcase or engine base.
One can find information on inert gases in chemistry books such as The Noble Gases by J.Thomas or online. Science Daily has a referenced article on noble gases.
You are probably referring to catalytic converters. These are mechanisms that turn harmful gases and other particles into nitrogen gas. The correct spelling will lead to you a variety of helpful websites.
in a air
I don't know of any honey that is harmful.
You can find an alphabetical list of gases in a chemistry textbook, an online encyclopedia like Wikipedia, or on a periodic table where gases are organized by their atomic number.
You would not find any gases in a cupboard other than what you would find in normal air. The gases you would find in normal are are: Nitrogen (78%) Oxygen (20%) Carbon Dioxide (0.03%) Rare Gases (Helium, Krypton, Argon, etc. 0.97%) And Water Vapour (varying amounts) These would be the five basic gases you would find in a cupboard.
On containers and doors accessing places which contain harmful things.
Depends on what "it" is.
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kitchen..:)
If you find coal, you can use it as a source of fuel for heating or cooking. It can be burned in a fireplace, stove, or furnace to generate heat. However, be cautious about using coal indoors as it can produce carbon monoxide and other harmful gases.