The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 9.11-g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(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 35.7 mL of a 0.145 M aqueous solution of KBrO3(aq). The unbalanced equation for the reaction is Bros (aq)+5b1+ (aq) â Br-(aq) +Sb5+ (aq) (unbalanced) Calculate the amount of antimony in the sample and its percentage in the ore. Number Number