CHEMISTRY. 



63 



(82) FACTORS FOR GRAVIMETRIC ANALYSIS. 



Logarithms of the ratios of the molecular and atomic weights cf 

 substances required to those of substances weighed. 



Log. / of required subst. = k 

 tabular log. of required substance 

 taken. 



mass of subst. weighed + 

 2 - lo^. mass of substance 



