Recent content by lvsiy

  1. L

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

    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...