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a signal word – either Danger or Warning – where necessary; hazard statements, indicating the nature and degree of the risks posed by the product; the identity of the supplier (who might be a manufacturer or importer) Each precautionary statement is designated a code, starting with the letter P and followed by three digits.
In experimental physics, a quadrupole ion trap or paul trap is a type of ion trap that uses dynamic electric fields to trap charged particles. They are also called radio frequency (RF) traps or Paul traps in honor of Wolfgang Paul , who invented the device [ 1 ] [ 2 ] and shared the Nobel Prize in Physics in 1989 for this work. [ 3 ]
In plumbing, a trap is a U-shaped portion of pipe designed to trap liquid or gas to prevent unwanted flow; most notably sewer gases from entering buildings while allowing waste materials to pass through. In oil refineries, traps are used to prevent hydrocarbons and other dangerous gases and chemical fumes from escaping through drains.
In chemistry, a chemical trap is a chemical compound that is used to detect unstable compounds. [1] The method relies on efficiency of bimolecular reactions with reagents to produce a more easily characterize trapped product. In some cases, the trapping agent is used in large excess.
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Phosphorus 15 P 30.974: Sulfur 16 S ... Template:Periodic table legend ...
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
S 4 → S 5. This system comprises four reactions and five different molecular species. The stoichiometry matrix for this system can be written as: = [] where the rows correspond to S 1, S 2, S 3, S 4 and S 5, respectively. The process of converting a reaction scheme into a stoichiometry matrix can be a lossy transformation: for example, the ...