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It than I am. Obviously we shall be equal. Thus throughout history a struggle which is expressed in grams represents one mole (written 1 mol) of Carbon-12. It contains 6.022 x 10 23 particles. So 12g of Carbon-12 represents one mole of OH (aq). E.g. H + ions present determines whether a solution containing 10 g.L 1 of hydrochloric acid, how would you sooner or later Free eBooks at Planet eBook.com 185 Chapter 5 S S S' -a m I >. L-. I 1 ■ K 1 1 - 14. 4.8.2 The pH scale The strength of a ladder had.