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The constants listed here are known values of physical constants expressed in SI units; that is, physical quantities that are generally believed to be universal in nature and thus are independent of the unit system in which they are measured.
In SI units, the values of c, h, e and k B are exact and the values of ε 0 and G in SI units respectively have relative uncertainties of 1.6 × 10 −10 [16] and 2.2 × 10 −5. [17] Hence, the uncertainties in the SI values of the Planck units derive almost entirely from uncertainty in the SI value of G.
In unit systems where force is a derived unit, like in SI units, g c is equal to 1. In unit systems where force is a primary unit, like in imperial and US customary measurement systems, g c may or may not equal 1 depending on the units used, and value other than 1 may be required to obtain correct results. [2]
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In molecular biology and genetics, GC-content (or guanine-cytosine content) is the percentage of nitrogenous bases in a DNA or RNA molecule that are either guanine (G) or cytosine (C). [1] This measure indicates the proportion of G and C bases out of an implied four total bases, also including adenine and thymine in DNA and adenine and uracil ...
C 177 H 268 N 52 O 50 S 6: grammotoxin: C 177 H 281 N 47 O 50 S 7: slotoxin: 144026-79-9 C 178 H 286 N 52 O 50 S 7: margatoxin: 145808-47-5 C 179 H 274 N 50 O 55 S 7: iberiotoxin: 129203-60-7 C 181 H 264 N 48 O 51 S 6: hanatoxin-1: 170780-00-4 C 181 H 291 N 55 O 51 S 2: teriparatide: 52232-67-4 C 190 H 287 N 55 O 57: neuropeptide Y: 82785-45-3 ...
Δ r G, Gibbs free energy change per mole of reaction, Δ r G°, Gibbs free energy change per mole of reaction for unmixed reactants and products at standard conditions (i.e. 298 K, 100 kPa, 1 M of each reactant and product), R, gas constant, T, absolute temperature, ln, natural logarithm, Q r, reaction quotient (unitless),
Plurals of vowel names also take -es (i.e., aes, ees, ies, oes, ues), but these are rare. For a letter as a letter, the letter itself is most commonly used, generally in capitalised form, in which case the plural just takes -s or -'s (e.g. Cs or c's for cees).