= 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 (Al₂O3) and water: 2Al(OH)3(s)→ Al₂O3(s) + 3 H₂O(g) In the second step, alumina (Al2O3) and carbon react to form aluminum and carbon dioxide: 2Al₂O3(s) + 3C (s) 4Al(s) + 3 CO₂ (g) Microsoft O O CHEMICAL REACTIONS Reaction sequence stoichiometry W 1 Suppose the yield of the first step is 91.% and the yield of the second step is 85.%. Calculate the mass of aluminum hydroxide required to make 6.0 kg of aluminum. Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits. 00 X 0.0 S
= 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 (Al₂O3) and water: 2Al(OH)3(s)→ Al₂O3(s) + 3 H₂O(g) In the second step, alumina (Al2O3) and carbon react to form aluminum and carbon dioxide: 2Al₂O3(s) + 3C (s) 4Al(s) + 3 CO₂ (g) Microsoft O O CHEMICAL REACTIONS Reaction sequence stoichiometry W 1 Suppose the yield of the first step is 91.% and the yield of the second step is 85.%. Calculate the mass of aluminum hydroxide required to make 6.0 kg of aluminum. Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits. 00 X 0.0 S
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
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Microsoft O
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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 (Al₂O3) and water:
2Al(OH)3(s) → Al₂O3(s) + 3H₂O(g)
W
Microsoft
CHEMICAL REACTIONS
Reaction sequence stoichiometry
Microsoft
6.52.210...
esc
In the second step, alumina (Al2O3) and carbon react to form aluminum and carbon dioxide:
2Al₂O3(s) + 3C(s) → 4Al(s) + 3 CO₂ (8)
Suppose the yield of the first step is 91.% and the yield of the second step is 85.%. Calculate the mass of aluminum hydroxide required to make 6.0 kg of
aluminum.
Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits.
Explanation
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