This is “Appendix G: Physical Constants and Conversion Factors”, appendix 7 from the book Principles of General Chemistry (v. 1.0). For details on it (including licensing), click here.
For more information on the source of this book, or why it is available for free, please see the project's home page. You can browse or download additional books there.
Has this book helped you? Consider passing it on:
Creative Commons supports free culture from music to education. Their licenses helped make this book available to you.
DonorsChoose.org helps people like you help teachers fund their classroom projects, from art supplies to books to calculators.
Chapter 31 Appendix G: Physical Constants and Conversion Factors
| Selected Physical Constants | |
|---|---|
| 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 | |
|---|---|
| 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 ) |