by Nikolai Shokhirev

Units of measures  | ABC Tutorials  |   Home

 

Energy Units

Energy is the most important quantity in physics, chemistry and technology. A lot of various energy units were traditionally used. It is still necessary make conversion between different units.

 Unit

 Comment

 Unit
  1 J     6.24150974 e-18  eV
  1 J     h 1.50919050 e+33
  1 J     kB 7.242964 e+22 K 
  1 J     2.29371276 e+17 Hartree
  1 J     h c 5.03411762 e+24 m -1  
  1 J     0.2390057361 cal
  1 eV   e  V   1.602176462 e-19 J
  1 K kB     1.3806503 e-23 J  
  1 K kB     0.6950387 cm -1 c h
  1 MHz h     6.62606876 e-28 J
  1 MHz h     3.335640952 e-5 cm -1 c h
  1 m -1 c h     1.98644544 e-25 J
  1 cm -1 c h     1.98644544 e-23 J
  1 cm -1 c h     29979.2458 MHz h
  1 erg     10-7 J
  1 cal   Thermochemical calorie    4.184 J (exact
  1 cal  The international steam
tablecalorie or IT calorie  		  4.1868 J (exact)
 1 Hartree      4.35974381 e-18 J
 = 27.2113834 eV
 = 6579683899.9 MHz h
 = 219474.63067 cm -1 c h
  NA eV     23.06037 kcal mol -1
  NA J    1.439325215 e+20 kcal mol -1 
  NA Hartree       2.625501e+06 J mol -1
  = 627.5 kcal mol -1
  NA K kB     8.314511 J mol –1
  1 Wh     3600 J

This table give the correct way of conversion e.g. between cm-1 and MHz.

 

Units of measures  | ABC Tutorials  |   Home


Warning: include(../../../footer.php) [function.include]: failed to open stream: No such file or directory in /usr111/home/s/i/siberia/public_html/u_az/public_html/abc/uofm/uom4.php on line 346

Warning: include() [function.include]: Failed opening '../../../footer.php' for inclusion (include_path='.:/usr/locl/lib/php') in /usr111/home/s/i/siberia/public_html/u_az/public_html/abc/uofm/uom4.php on line 346