Constants and Conversions Factors

Table 47. Constants and Conversion Factors Avogadro s number = 6.023 X 10s per mole Electronic charge = 4.802 X 10-10 e.s.u.

The authoritative values for physical constants and conversion factors used in thermodynamic calculations are assembled in Table 2.3. Furthermore, information about the proper use of physical quantities, units, and symbols can be found in several additional sources [5]. 

Appendix 4 Electrical quantities, physical constants and conversion factors... 

The international system of units is described in detail in NIST Special Publication 81l,1 and lists of physical constants and conversions factors of selected unit conversions1 5 are given in the following tables. The conversions are presented in matrix format when all of the units are of a convenient order of magnitude. When some of the unit conversions are of tittle value (such as the conversion between metric tons and grains), tabular form is followed, with the less useful units omitted. 

A number of physical constants and conversion factors frequently useful in noble gas geochemistry calculations are collected in Table 1.1. These values have been used for all the calculations in this book. 

Useful Constants and Conversion Factors of Frequent Occurrence... 

We will specifically consider water relations, solute transport, photosynthesis, transpiration, respiration, and environmental interactions. A physiologist endeavors to understand such topics in physical and chemical terms accurate models can then be constructed and responses to the internal and the external environment can be predicted. Elementary chemistry, physics, and mathematics are used to develop concepts that are key to understanding biology—the intent is to provide a rigorous development, not a compendium of facts. References provide further details, although in some cases the enunciated principles carry the reader to the forefront of current research. Calculations are used to indicate the physiological consequences of the various equations, and problems at the end of chapters provide further such exercises. Solutions to all of the problems are provided, and the appendixes have a large list of values for constants and conversion factors at various temperatures. 

Constants and Conversion Factors Basic and Supplementary Units Derived Units and Quantities Physical Constants Properties oe Water Periodic Table of the Elements... 

The following values, constants, and conversion factors apply ... 

Using defined constants and conversion factors for mass, length, time, and temperature, caleulate conversion factors for (a) foot-pounds force to kilowatt-hours, (b) gallons (1 gal = 231 in. ) to liters (10 cm ), (c) Btu per pound mole to joules per kilogram mole. 

---