Useful Data

Fundamental Constants


NameSymbolValue
Avogadro's NumberN6.022 · 1023
Piπ 3.1415927
Faraday's ConstantF=Ne9.64853414 · 104
Gas ConstantR 8.314472 J · K-1 · mol-1
Planck's Constanth 6.626068 · 10-34 J-s
Speed of Lightc 299 792 458 m / s
Acceleration due to gravity
(at sea level)
g 9.80665 m/s2
Boltzmann's ConstantkB 1.3806503 · 10-23 m2 kg s-2 K-1
Electron Chargee1.60217733 · 10-19 C
Electron Massme9.10938188 · 10-28 g
Proton Massmp1.00727646 · 10-24 g
Neutron Massmn 1.00866492 · 10-24 g



Unit Conversions


UnitUnit
101.325 Joule1 L-atm
1 Joule1 kg-m2/s2
1 Joule0.2390 Calories
1 Calorie 4.184 Joules
1 eV1.602 · 10-19 Joules