Often times, a single chemical species will have an IUPAC (International Union f

Question

Often times, a single chemical species will have an IUPAC (International Union for Pure and Applied Chemistry) name that is distinct from the common name. It can be confusing to work with compounds that are identified by multiple names, so the American Chemical Society's (ACS) Chemical Abstracts Service (CAS) has developed an identification system in which each chemical is given a unique number, termed the CAS number. Students can correlate the CAS number with ____________, thus avoiding the confusion associated with multiple names.

Explanation / Answer

CAS number = the given number of the unique structure

the line must include "IUPAC name" or "Common Names"

Note that in reallity, all substances are in a catalogue; there is included steorechemistry so there is no repetition of names

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