General Chemistry/Constants

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Useful Physical/Chemical Constants[edit]

Constant Value
Avogadro's Number NA = 6.022 14 × 1023 mol-1
Faraday Constant F = 96 485.33 C mol-1
Atomic Mass Constant 1 amu = 1.660 538 × 10-27 kg
Molar Gas Constant R = 8.314 4 J mol-1 K-1
Molar Gas Constant R = 0.082 057 46 L atm K-1 mol-1
Coulomb's Constant ke = 8.987 551 × 109 N m2 C-2
Speed of Light (Vacuum) c = 299 792 458 m s-1
Boltzmann Constant k = 1.380 65 × 10-23 J K-1
Charge on a Proton/Electron e = 1.602 176 × 10-19 C
Standard acceleration of gravity g = 9.806 65 m s-2
Rydberg constant R = 1.0973 731 568 539 × 107 m-1

These constants were obtained from The NIST Reference on Constants, Units and Uncertainty.