A 1.0000 gram sample of zinc metal is added to a solution containing 1.2500 grams of an unknown compound made of bismuth and chlorine. The reaction results in teh formation of zinc chloride and metallic bismuth. when the reaction is complete, unreacted zinc remains, and this unreacted zinc is "burned off" by reaction with hydrochloric acid. After washing and drying, the mass of bismuth metal recovered is 0.6763 grams. Calculate thh experimental percentage of bismuth in the original unknown compound.