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# Physical Constants

Name Value Symbol Value
Acceleration due to gravity g = 9,8 m·s−2 g 9,8 m·s−2
Gravitational constant G = 6,67 × 10−11 N·m2·kg−2 G 6,67 × 10−11 N·m2·kg−2
Speed of light in a vacuum c = 3,0 × 108 m·s−1 c 3,0 × 108 m·s−1
Planck’s constant h = 6,63 × 10−34 J·s h 6,63 × 10−34 J·s
Coulomb’s constant k = 9,0 × 109 N·m2·C−2 k 9,0 × 109 N·m2·C−2
Charge of an electron e = −1,6 × 10−19 C e −1,6 × 10−19 C
Electron mass me = 9,11 × 10−31 kg me 9,11 × 10−31 kg
Standard pressure pθ = 1 atm = 1,013 × 105 Pa pθ 1 atm = 1,013 × 105 Pa
Standard temperature Tθ = 0 °C = 273 K Tθ 0 °C = 273 K
Molar gas volume at STP Vm = 22,4 dm3·mol−1 Vm 22,4 dm3·mol−1
Universal gas constant R = 8,31 J·K−1·mol−1 R 8,31 J·K−1·mol−1
Avogadro’s number NA = 6,022 × 1023 mol−1 NA 6,022 × 1023 mol−1