Physical Constants - chemistry.
Publié le 11/05/2013
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Physical Constants - chemistry. Pi (ratio of a circle's circumference to its diameter): p = 3.14159265... e (base of natural logarithms, defined such that ln(e) = 1): e = 2.71828183... Gravitational constant: G = 6.673 × 10-11 m3/kg·s2 Acceleration due to Earth's gravity: g = 9.807 m/s2 Speed of light in a vacuum: c = 299,792,458 m/s (exact) Avogadro's constant: NA=6.022142 × 1023 mol-1 Gas constant: R = 8.31447 J/mol·K Boltzmann constant: k = 1.3806503 × 10-23 J/K Planck constant: h = 6.6260688 × 10-34 J·s Elementary charge: e = 1.602176 × 10-19 C Electron rest mass: me = 9.10938189 × 10-31 kg Proton rest mass: mp = 1.67262158 ×10-27 kg Neutron rest mass: mn = 1.6749286 ×10-27 kg Microsoft ® Encarta ® 2009. © 1993-2008 Microsoft Corporation. All rights reserved.
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