Respuesta :

superman1987

Answer:

25.6 %.

Explanation:

  • To calculate the % of Cl in KClO₄:

% Cl = [Atomic mass of (Cl)/molar mass of KClO₄] x 100 = [(35.5 g/mol)/(138.55 g/mol)] x 100 = 25.62 % ≅ 25.6 %.