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Question:

can someone give me an example of an oxidation number?

I need some homework help one example is aluminum and oxygen and another is sodium and chlorine I just need an example of how to work them thanks much :)

Answer:

I would go the window unit route even if I had to cut the wall to do so it makes sense so your not cooling the garage all day and night also your main unit may not be rated for the extra SQ footage of the garage.
Something else you could try, that wouldn't waste as much electricity, is plugging up to big honking fans and hanging them in the top corners opposite of the garage doorIt won't be as cool as the inside, but it should be comfortableBesides, when you work, you sweat, and sweating in the cold is extrememly bad for you.
As Long as the unit is big enough to handle the extra vent(s) without compromising the house temperature, it sounds like a great idea.
Look at the group number of the elementsThat will tell you the number of electrons that are in the outer shell(s)Oxygen is Group VI and has 6 electrons in the outer shell when it would really be happier with 8So to oxidize it will try to pick up two electrons making it's charge -2 (minus one for each extra electron)Aluminum has 3 electrons (in two different orbits) that it would just as soon get rid of, so for each one that goes away, it's charge goes up by one for a total of +3To figure out how a compound is made out of the two, its like figuring the least common denominator in mathAl wants to lose 3 and O wants to gain 2, so they will both be happy if there are 6 electrons exchanged, 2 atoms of Al give 3 each to 3 atoms of O which take 2 each for a total of 6Al_2O_3 would be aluminum oxideYou should be able to look up sodium and chloride and figure out how to make table salt the same wayIf you're still stuck email me and I'll see if I can't explain a little more clearly.

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