Question

composicion porcentual del oxido per bromico

Answer 1

Br2O7

1. calcular Mm

Br: 2 x 80 = 160 g/mol

O: 7 x 16 = 112 g/mol

````````````````````````````````````````````````````

         Mm = 272 g/mol

2. calcular %

% bromo

          272 g ----- 100 %

           160 g -----    x

                x = 58.82 % Br

% Oxígeno

              272 g ----- 100 %

                112 g -----    x

                x = 41.17 % O