Need help balancing a few equations..

[dizmouk2009]

Hey, I'm having some serious problems with trying to balance the following equations. I've pickled my head it seems so I can't even get my head around them. Could someone give me some help please.

Mg(s) + O₂(g) −−−−→ MgO(s)
Is this balanced - 2Mg(s) + O₂(g) −−−−→ 2MgO(s) ?

Fe(s) + O₂(g) −−−−→ Fe₂O₃(s)

Cu(s) + O₂(g) −−−−→ CuO(s)

Thanks in advance, my head hurts! :)

[dizmouk2009]

I think I will just give up and work the streets, I'm not that bad looking.

[dizmouk2009]

Ok I've noticed a few different people online at the moment so I'm going to shout out for a bit of help with this again. I've had a bit of a rest since I first posted this question but I still can't get my head around this. Is the first equation balance correct?

[dizmouk2009]

Someone tell me if I'm right with...

Fe(s) + O₂(g) → Fe₂O₃(s)

being 2Fe(s) + 3O₂(g) → Fe₂2O₃(s)

I've got this feeling I may have sorted it but if someone could clarify I would be most thankful :)

[Ice.Maiden]

http://richardbowles....try/balance.htm#part1

[dizmouk2009]

Thanks Ice.Maiden, I've been to that site and it just confuses me, I've found one a little easier to understand.
2Mg(s) + 1O₂(g) → 2MgO(s)
2Fe(s) + 3O₂(g) → 1Fe₂2O₃(s)
2Cu(s) + 1O₂(g) → 2CuO(s)

I'm pretty rusty but I think I'm getting there :) all I need to know how is if these are right, also do you have to specify '1' or can you just leave it, f.ex

2Cu(s) + O₂(g) → 2CuO(s) INSTEAD OF 2Cu(s) + 1O₂(g) → 2CuO(s)

Thanks again Ice.Maiden I appreciate you taking the time to find a website :)

[factor-fiction]

You would write O₂rather than 1 O₂

[dizmouk2009]

Oh well the TMA has gone now, It's only 2 points I've lost.

Maybe I could contend it and say I made a typo ;)