The extraction of aluminum metal from the aluminum hydroxide found in bauxite by the hall-héroult process is one of the most remarkable success stories of 19th century chemistry, turning aluminum from a rare and precious metal into the cheap commodity it is today. in the first step, aluminum hydroxide reacts to form alumina and water: in the second step, alumina and carbon react to form aluminum and carbon dioxide: suppose the yield of the first step is and the yield of the second step is . calculate the mass of aluminum hydroxide required to make of aluminum. be sure your answer has a unit symbol, if needed, and is rounded to significant digits.