OK so I need to know how to balance the I guess you would call it equasions...

magnesium chloride plus sulfiric acid


magnesium plus nitrogen


hydrochloric acid plus sodium hydroxide


For example to balance oxygen plus hydrogen you would put...
O2 +2H2---->2H2O


Thanks

All right, remember, Magnesium's charge is +2, and Chlorine's charge is -1
so it would be MgCl2 and H2SO4; 3Mg+2N=Mg3N2 (Not sure about this one, so check with your Chemistry teacher) HCl+NaOH=H2O+NaCl

Cu + H2O>CuO+H2

How do you write a balanced equation for Cu +H2O> CuO + H2?