The most useful ore of aluminum is bauxite, in which Al is ...

[Capo]

The most useful ore of aluminum is bauxite, in which Al is present as hydrated oxides, Al2O3  xH2O.
 
  The number of kilowatt-hours of electricity required to produce 3.00 kg of aluminum from electrolysis of compounds from bauxite is ________ when the applied emf is 4.50 V.
  A) 0.0249
  B) 0.0402
  C) 26.8
  D) 13.4
  E) 40.2

Question 2

The concentration of sulfate ions in a 0.233 M solution of sulfuric acid is ________.
 
  A) 0.699 M
  B) 0.233 M
  C) 0.466 M
  D) 0.0777 M
  E) 0.155 M

[phuda]

Answer to Question 1

E

Answer to Question 2

B

[Capo]

Excellent

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