What Does U.B.W. Mean in Chemistry?

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The discussion centers on the abbreviation "u.b.w" encountered in a chemistry context, specifically after compounds like nitric acid. The user is uncertain about its meaning, suspecting it relates to mass. A mentor notes that some abbreviations, including "u.b.w," may not be commonly taught in academic settings and could be specific to certain industries or companies. They mention another abbreviation, "OWF," which stands for "on the weight of the formula," indicating that such terms can vary widely in usage. The conversation highlights the potential for confusion among newcomers to chemistry regarding industry-specific terminology.
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whats the definition of "u.b.w"
Hi im new to chemistry and recently i started to read a chemistry book and saw a shortcut called "u.b.w" it was always after some compound (like. nitric acid/0.9 u.b.w.) tried to looking it up and nothing related showed i think its some kind of mass but like i said im new to chemistry. Sorry for my english but english is not my main language. I would be grateful if someone replies.

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Some abbreviations may never come-up during academic instruction; even some kinds of use of terminology. One may find some abbreviation in use in a certain industry or within some very small few companies. There can be found, OWF for "on the weight of the formula"; for which "formula" is a mixture or blend of materials.
 
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