Balancing Redox reactions! chemistry help please!?

Please help me balance these four redox equations!

1) Cl- + NO3- --> ClO- + NO
2) H2O2 + Fe ^+2 --> Fe^+3 + Sn^+2
3)Fe + Sn^+4 --> Fe^+3 + Sn^+2
4)Cu + NO3- --> Cu^+2 + NO2

Thanks!
Update: These are REDOX equations...they need H+, H20, and O2 charges as well
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