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 (Al,0,) and water: 2A1(OH), (s) Al,0; (s) + 3 H,0 (g) In the second step, alumina (Al,0,) and carbon react to form aluminum and carbon dioxide: 2Al,0; (s) + 3C(s) → 4Al(s) + 3 CO, (g) Suppose the yield of the first step is 82.% and the yield of the second step is 69.%. Calculate the mass of aluminum hydroxide required to make 10.0 kg of aluminum. Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits.

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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 (Al,0,) and water:
2Al(OH), (s)
Al,0; (s) + 3 H,0 (g)
-
In the second step, alumina (Al,0,) and carbon react to form aluminum and carbon dioxide:
2Al,0; (s) + 3C(s) →
4Al(s) + 3 CO, (g)
Suppose the yield of the first step is 82.% and the yield of the second step is 69.%. Calculate the mass of aluminum
hydroxide required to make 10.0 kg of aluminum.
Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits.
x10
Transcribed Image Text: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 (Al,0,) and water: 2Al(OH), (s) Al,0; (s) + 3 H,0 (g) - In the second step, alumina (Al,0,) and carbon react to form aluminum and carbon dioxide: 2Al,0; (s) + 3C(s) → 4Al(s) + 3 CO, (g) Suppose the yield of the first step is 82.% and the yield of the second step is 69.%. Calculate the mass of aluminum hydroxide required to make 10.0 kg of aluminum. Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits. x10
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