Helpp!! Please it’s balancing equations and I really need help in it it’s so hard theirs two other parts if you can help with those too:))

1.) 2=H2 1=O2 2=H2O
2.)
1st one - 2,6,2,3
2nd one - 2,2,1
3rd one - 1,2,2,1
4th one - 1,2,1,2

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.