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Молекулска маса Садржај Јединице Види још Референце Спољашње везе Мени за навигацијуPhysical Chemistry: A Molecular ApproachA Free Android application for molecular and reciprocal weight calculation of any chemical formulaStoichiometry Add-In for Microsoft Excel

Количина супстанцеМаса


молекулхемијског једињењаатомских масаатомаСИ јединицајединица атомске масе










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Молекулска маса




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Иди на претрагу




Претпостављајући да водоник и кисеоник имају стандардне тежине молекулска маса воде је 18.01528 u.


Релативна молекулска маса, је број који показује колико пута молекул неког хемијског једињења има већу масу од 1/12 атома изотопа 12C. Једнака је збиру атомских маса атома који граде молекул.[1][2][3][4]




Садржај





  • 1 Јединице


  • 2 Види још


  • 3 Референце


  • 4 Спољашње везе




Јединице


СИ јединица је kg. Међутим за изражавање молекулске масе се чешће користи јединица атомске масе (симбол u или Da). На пример, молекулска маса воде је апроксимативно:


m(H2O) ≈displaystyle approx 18 u ≈displaystyle approx 3×10−26 kg


Види још


  • Авогадров број


Референце




  1. ^ Mendham, J.; Denney, R. C.; Barnes, J. D.; Thomas, M.J.K.; Denney, R. C.; Thomas, M. J. K. (2000). Vogel's Quantitative Chemical Analysis (6th изд.). New York: Prentice Hall. ISBN 0-582-22628-7. 


  2. ^ Peter Atkins; Julio de Paula (2001). Physical Chemistry (7th изд.). W. H. Freeman. ISBN 0716735393. 


  3. ^ Donald A. McQuarrie; John D. Simon (1997). Physical Chemistry: A Molecular Approach (1st изд.). University Science Books. ISBN 0935702997. 


  4. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (II изд.). Oxford: Butterworth-Heinemann. ISBN 0080379419. 



Спољашње везе


  • A Free Android application for molecular and reciprocal weight calculation of any chemical formula


  • Stoichiometry Add-In for Microsoft Excel for calculation of molecular weights, reaction coefficients and stoichiometry.




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