Abstract
In this paper, it is argued that the SI system has not carefully enough taken into account the differences that exist between stoichiometry and physics, and because of this neglect forced the kind-of-quantity amount of substance into a false form. The mole is not a unit such as the metre, the kilogram, and the second. It is a “unit” only in the sense in which purely mathematical scaling factors can be called units.
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References
BIPM (2006) The international system of units (SI), 8th edn. http://www.bipm.org/en/si/si_brochure/. Accessed 18 June 2011
Johansson I (2010) Metrological thinking needs the notions of parametric quantities, units and dimensions. Metrologia 47:219–230
Cooper G, Humphry SM (2010) The ontological distinction between units and entities. synthese. doi:10.1007/s11229-010-9832-1
De Bièvre P (2007) Numerosity versus mass. Accred Qual Assur 12:221–222
Price G (2010) Failures of the global measurement system. Part 1: the case of chemistry. Accred Qual Assur 15:421–427
Price G (2010) Failures of the global measurement system. Part 2: institutions, instruments and strategy. Accred Qual Assur 15:477–484
De Bièvre P (2011) Integer numbers and their ratios are key concepts in describing the interactions of atoms and molecules. Accred Qual Assur 16:117–120
Price G (2011) A skeptic’s review of the New SI. Accred Qual Assur 16:121–132
Kyburg HE (2009) Theory and measurement. Cambridge University Press, Cambridge
BIPM (2010) Draft Chapter 2 for SI brochure, following redefinitions of the base units. http://www.bipm.org/utils/common/pdf/si_brochure_draft_ch2.pdf. Accessed 18 June 2011
Price G, De Bièvre P (2009) Simple principles for metrology in chemistry: identifying and counting. Accred Qual Assur 14:295–305
Acknowledgments
The paper owes much to the straightforward discussions that have taken place in a couple of small mailing groups where I am lucky to have become adopted. In particular, I am grateful to Paul De Bièvre, Walter Emerson, Marcus Foster, Stephen Humphry, Brian Leonard, and Gary Price. I thank De Bièvre for the invitation to write this paper.
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Some notations in this article do not comply with usual ACQUAL rules. They have been admitted as the article provides a view on quantities and units from a quite different perspective.
Papers published in this section do not necessarily reflect the opinion of the Editors, the Editorial Board and the Publisher. A critical and constructive debate in the Discussion Forum or a Letter to the Editor is strongly encouraged!
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Johansson, I. The mole is not an ordinary measurement unit. Accred Qual Assur 16, 467–470 (2011). https://doi.org/10.1007/s00769-011-0804-z
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DOI: https://doi.org/10.1007/s00769-011-0804-z