 
 <prompt> How you take reason reach dis conclusion? Given di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: Faraday constant F na di charge of one mole of electrons, wey equal to Avogadro constant NA multiplied by elementary charge e. E fit be determine by careful electrolysis experiments, wey dey measure di amount of silver wey dissolve from one electrode for one given time and for one given electric current. For practical purposes, e dey measure for conventional electrical units, so e dey get di symbol F90. If we substitute di definitions of NA and e, and convert from conventional electrical units to SI units, e go give us di relation to di Planck constant. 