This is “Appendix G: Physical Constants and Conversion Factors”, appendix 7 from the book Principles of General Chemistry (v. 1.0M). For details on it (including licensing), click here.
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Selected Physical Constants | |
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Atomic mass unit | 1 amu = 1.6605389 × 10−24 g |
1 g = 6.022142 × 1023 amu | |
Avogadro’s number | N = 6.022142 × 1023/mol |
Boltzmann’s constant | k = 1.380651 × 10−23 J/K |
Charge on electron | e = 1.6021765 × 10−19 C |
Faraday’s constant | F = 9.6485338 × 104 C/mol |
Gas constant | R = 0.0820575 (L atm)/(mol K) |
= 8.31447 J/(mol K) | |
Mass of electron | me = 5.485799 × 10−4 amu |
= 9.109383 × 10−28 g | |
Mass of neutron | mn = 1.0086649 amu |
= 1.6749273 × 10−24 g | |
Mass of proton | mp = 1.0072765 amu |
= 1.6726217 × 10−24 g | |
Pi | π = 3.1415927 |
Planck’s constant | h = 6.626069 × 10 −34J s |
Speed of light (in vacuum) | c = 2.99792458 × 108 m/s (exact) |
Useful Conversion Factors and Relationships | |
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Length | Energy (derived) |
Si unit: meter (m) | Si unit: joule (J) |
Mass | Pressure (derived) |
SI unit: kilogram (kg) | SI unit: pascal (Pa) |
Temperature | Volume (derived) |
Si unit: kelvin (K) | SI unit: cubic meter (m 3 ) |