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      • Lanthanides: La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
      • Actinides: Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
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  • 48139
  • NEWS
    • techemy news
    • Articles
    • Chemistry in everyday life
    • Chemistry and Technology
    • General Chemistry
    • Inorganic chemistry
    • Organic Chemistry
    • Biochemistry
    • Analytical Chemistry
    • Physical Chemistry
    • Electrochemistry
    • History of Chemistry
    • Chemical Education
  • FORUM
  • HANDBOOK
    • General Chemistry
      • The basic concepts of chemistry
      • Fundamentals of quantitative calculations in chemistry
      • Energy and direction of chemical reactions
      • Atomic Structure
      • Periodic Table of Elements
      • Chemical bond
      • Reactions Inorganic Chemistry. Electrolytic dissociation
      • Electrochemistry
      • Chemical equilibrium. The rate of chemical reactions
    • INORGANIC CHEMISTRY
      • The main classes of inorganic compounds
      • Hydrogen and its compounds
      • Elements of group IA: Li Na K Rb Cs Fr
      • Elements of group IIA: Be Mg Ca Sr Ba Ra
      • Elements of group IIIA: B Al Ga In Tl
      • Elements of group IVA: C Si Ge Sn Pb
      • Elements of group VA: N P As Sb Bi
      • Elements of group VIA: O S Se Te Po
      • Elements of group VIIA: F Cl Br I At
      • Elements of group VIIIA: He Ne Ar Kr Xe Rn
      • General characteristics of df-elements.
      • Elements of group IB: Cu Ag Au
      • Elements of group IIB: Zn Cd Hg
      • Elements of group IIIB: Sc Y
      • Lanthanides: La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
      • Actinides: Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
      • Elements of group IVB: Ti Zr Gf Rf
      • Elements of group VB: V Nb Ta Db
      • Elements of group VIB: Cr Mo W Sg
      • Elements of group VIIB: Mn Tc Re Bh
      • Elements of group VIIIB: Fe Co Ni Ru Rh Pd Os Ir Pt
    • ORGANIC CHEMISTRY
      • Theoretical Foundations of Organic Chemistry
      • Acyclic hydrocarbons
      • Rock-Oil
      • Coal
      • Acyclic oxygen-containing compounds
      • Acyclic halogenated compounds
      • Acyclic nitrogen-containing compound
      • Alicyclic sulfur-containing compound
      • Сarbohydrates
      • Alicyclic compound
      • Aromatic hydrocarbon
      • Heterocycles compounds
      • Bio-chemicals substances Classes
      • Special purpose Orhanycheskye substance
      • Polymers
    • Chemistry reference tables
      • Periodic Table of Elements
      • Relative molecular mass (chemical calculator)
      • Thermodynamic quantities of simple and complex substances
      • Density of water solutions
  • TASKS
    • Solved
    • Solve
  • BOOKS
    • General chemistry
    • Inorganic chemistry
    • Organic chemistry
    • Physical chemistry
    • Colloid chemistry
    • Electrochemistry
    • Chemical Engineering
    • Analytical chemistry
    • Biological Chemistry
    • Polymers
    • Handbooks
    • History of Chemistry
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    Refining Avogadro’s number on way to new kilo.

    22.07.2015
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    Technical work on techemy.com

    03.07.2015

Molecules chemical compounds.

  • Refining Avogadro’s number on way to new kilo.

    Refining Avogadro’s number on way to new kilo.

    22.07.2015
  • Technical work on techemy.com

    Technical work on techemy.com

    03.07.2015

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