Tetapan FisikA

Tetapan FisikA

 

Percepatan standar untuk gravitasi bumi           g      = 9,80655 m s^-2 (tepat)

Bilangan Avogadro                                                 N₀    = 6,022137 × 10²³

Jari-jari Bohr                                                            a₀    = 0,52917725 Å = 5,2917725 × 10^-11 m

Tetapan Boltzman                                                  k_B    = 1,38066 × 10^-23 J K^-1

Muatan Elektron                                                     e      = 1,6021773 × 10^-19 C

Tetapan Faraday                                                    F     = 96.485,31 C mol^-1

Massa untuk partikel dasar:

        Elektron                                                             m_e    = 9,109390 × 10^-31 kg

        Proton                                                                m_p    = 1,672623 × 10^-27 kg

        Neutron                                                             m_n    = 1,674929 × 10^-27 kg

Nisbah massa proton dengan massa elektron   m_p/m_e = 1836,15270

Permitivitas vakum                                                 ε₀     = 8,8541878 × 10^-12 C² J^-1 m^-1

Tetapan Planck                                                       h      = 6,626076 × 10^-34 J s

Laju cahaya dalam vakum                                  c      = 2,99792458 × 10⁸ m s^-1 (tepat)

Tetapan gas universal                                            R     = 8,31451 J mol^-1 K^-1

                                                                                            = 0,0820578 L atm mol^-1 K^-1

Nilai-nilai diambil dari Quantities, Units and Symbol in Physical Chemistry, International Union of Pure and Applied Chemistry, Blackwell Scientific Publications, 1988

Faktor Konversi

 

Atmosfer standar                1 atm     = 1,01325 × 105 Pa

                                                            = 1,01325 × 105 kg m^-1 s^-2 (tepat)

Satuan massa atom            1 smu = 1,660540 × 10^-27 kg

                                                1 smu = 1,492419 × 10^-10 J = 931,4943 MeV (energi yang setara dari E = mc²)

Kalori                                     1 kal = 4,184 J (tepat)

Elektron volt                         1 eV    = 1,6021772 × 10^-10 J

                                                            = 96,48531 kJ mol^-1

Kaki                                       1 kaki = 12 inci = 0,3048 m (tepat)

Galon (AS)                            1 galon = 4 quart = 3,78541 L (tepat)

Liter-atmosfer                      1 L atm = 101,325 J (tepat)

Metrik ton                             1 metrik ton = 1000 kg (tepat)

Pound                                    1 lb = 16 ons = 0,45359237 kg (tepat)