NA = 6,022 ⋅ 1023 mol−1 mu = 1,661 ⋅ 10−27 kg R = 8,314 J K−1 mol−1 Vm = 22,41 dm3 mol−1 (NTP) e = 1,602 ⋅ 10−19 C F = 96 485 A s mol−1 h = 6,626 ⋅ 10−34 J s c = 2,998 ⋅ 108 m s−1 Kw = 1,0 ⋅ 10−14 (25 °C) T/K = θ/°C + 273,15
1 atm = 101,325 kPa
1 bar = 105 Pa