The presence of a plane of symmetry in a molecule is a quick way of determining whether a molecule is chiral or not. Which structure(s) contain a plane of symmetry?.

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

do you have a formula possibly

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