I need help Balancing these equations...?

Question

I think these need to be balanced the Redox way....
If you can, show the steps how u done this...but if not its cool
1) Mn O2 + H2 SO4 + H2 C2O4
2) SbCl5 + 2KI >>>> SbCl3 + 2KCl + I2 << done, but is it right?
3) S + HNO3 >>>> SO2 + NO +H2O
4) HNO2 + HI >>>> NO + I2 + H2O

Answer 1

MnO2 + H2SO4 +2H2C2O4---> Mn(C2O4)2 + H2O + H2SO4

SbCl5+2KI--->SbCl3 + 2KCl+I2

3S + 4HNO3---> 3SO2 +4NO+2 H2O

2HNO2 +2HI--->2NO+ I2+2H2O