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The most useful ore of aluminum is bauxiteChem help!?

The most useful ore of aluminum is bauxite, in which Al is present as hydrated oxides, Al2O3 xH2OThe number of kilowatt-hours of electricity required to produce 4.00 kg of aluminum from electrolysis of compounds from bauxite is _ when the applied emf is 5.00 VThe answer is 59.6I just need help understanding how to get to the answerPlease help me!!

Answer:

Oddly enough, I have understood blanketing horses is not good for them because they perspire and can't adjust to the cold properlyI usually take a regular store bought blanket and throw it over mineI feel if the horse wants it off, they'll shake it off, which sometimes they do.
A lot depends on the age health of the horseWe tend to put light blankets on in November or so and change to heavy blankets when it gets below freezing.
Our horses live outside 24/7 they have a run in shed and access to free choice grass hay and water 24/7None of them wear blankets at this timeThey all grow a long fluffly winter coat and since we do not ride hard durring the winter and we never body clip our horses we do not blanket.
Hard to nail down a specific whenIt depends on how well kept the horse is, weather conditions, etcHorses' coats are designed so that heat is trapped between the hair and their skinSo, they can withstand pretty sold tempsEven if they get some snow and it crusts over a little (not talking a blizzard, by any means) that helps to insulateThe wind is the main negative factorIf the temp is 40's and the wind is whipping, it pretty much whips the heat right away from themI only blanket mine with water resistant blankies when it's below about 65 and gonna rainIf I had a barn for them all, I wouldn't blanket at allBut, I've got mid-Texas weather, so I'm probably different than youAlso, if the horse is in shape, that really helpsIf they're on the poor side, they'll be so much more succeptable (sp?) to the coldGood quality hay is a must if your in for a booger of a winterI got all that from an issue of Eqqus, that specifically had a long article about when and how to blanket.
Write and balance the equation for the production of aluminium from bauxite or look it up, that's going to be essential to start working through this problemYou know you want 4.00 kg of Al so you know the moles of Al From the oxidation number change in Al, you know how many moles of electrons you need to use which is also the number of Faradays96,500 coulombs 1 FaradayP V I So for 1000W, the current flow is 200 amperes 200 coulombs/sec For a kWh 1000 W 3600 sec 1 kWh 200 coulombs/sec 3600 sec 720,000 coulombs Since you know the coulombs from the first part, you divide by 720,000 to get the number of kWh required.

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