useful_consants_jan302008

useful_consants_jan302008 - Useful constants and equations...

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Unformatted text preview: Useful constants and equations Units and Constants: Mass of an electron: 9.1094 * 10-31 kg = 5.4858 * 10-4 Da = 0.5110 MeV Charge of an electron (e): -1.6022 * 10-19 C Mass of a free proton: 1.6726 * 10-27 kg = 1.0073 Da = 938.28 MeV Mass of a free neutron: 1.6749 * 10-27 kg = 1.0087 Da = 939.57 MeV 1 atomic mass unit = 1/12 12 C atomic mass = 1 Da ≈ 1.6605 * 10-27 kg = 931.494 MeV 1 Th = 1 Da/e = 1.0364*10-8 kg/C 1 J = 4.184 calories = 1 N*m = 1 kg * m 2 / s 2 1 V = 1 J/C 1 coulomb (C) = 6.2415 * 10 18 e 1 electron volt (eV) = 1.6022 * 10-19 J = 23.06 kcal/mole = 8065.54 cm-1 = 96.485 kJ/mol ≈ 11,600 K 1 MeV = 1.0 * 10 6 eV = 1.6022 * 10-13 J 1 kcal/mol = 4.184 kJ/mole = 0.04336 eV = 349.75 cm-1 Planck’s constant (h) = 6.636 * 10-34 J * s 1 amp (A) = 1 C/second Faraday constant (F) = 9.6485 * 10 4 C/mole 1 hartree (E h ) = 4.3597 * 10-18 J = 27.211 eV k = 1.3807 * 10-23 J/K = 8.6173 * 10-5 eV/K at room temperature (293 K), kT = 4.045 * 10-21 J = 2.436 kJ/mol = 0.0252 eV 1 Tesla (T) = 10,000 gauss = 1 kg / (C * s)...
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useful_consants_jan302008 - Useful constants and equations...

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