Escaping from the haunted house, Anna ran home immediately to her chemistry lab back at the high school. After analysis of the gold heart, she found the heart was not composed of pure gold, but gold (III) oxide (Au2O3). What percentage (by mass) was gold in the heart?

Calculate: select the worksheet tab. this tab you calculate the analyte concentration.  fill in the first set of boxes ("moles h2so4" and "moles naoh") based on the coefficients in the balanced equation. (if there is no coefficient, the value is 1.)  record the appropriate volumes in the "ml naoh" and "ml h2so4" boxes.  record the concentration of the titrant in the m naoh box. click calculate. what is the concentration listed