Formula Weight Fraction
Support formula weight fraction.
Given the following, what are the atom densities.
wdens = total_weight_density wform( 3 ){ % atom count wfrac ( ac-209 ) = 0.4 % weight fraction sum to one wfrac ( ac-230 ) = 0.2 % weight fraction sum to one wfrac ( ac-231 ) = 0.4 % weight fraction sum to one } wform( 4 ){ % atom count wfrac ( ac-229 ) = 0.5 % weight fraction sum to one wfrac ( ac-223 ) = 0.3 % weight fraction sum to one wfrac ( ac-223 ) = 0.2 % weight fraction sum to one }
TODO - specify the conversion formula.