Respuesta :

Answer:

%K=38,6%  %N=13,86%   %O=47,54%

Explanation:

%K=M K/M KNO3

  =39/101

=38,6%

%N=14/101

=13.86%

%O=100%-%K-%N

=100-38,6-13,86

=47,54%