The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 6.43-g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCI(aq) and passed over a reducing agent so that all the antimony is in the form Sb3*(aq). The Sb3*(aq) is completely oxidized by 27.0 mL of a 0.135 M aqueous solution of KBrO3(aq). The unbalanced equation for the reaction is Bros (aq) + Sb3 + (aq) â Br-(aq) + Sb5 + (aq) (unbalanced) Calculate the amount of antimony in the sample and its percentage in the ore Number Number 0