O.k I need to balance these chemical equations but I'm not sure if I did these correct.
Magnesium with molecular oxygen Mg0 = Mg +2 and 0 -2
Magnesium with molecular nitride MgN = Mg +2 and N -2
Magnesium nitride with h2o MgN2 + H2o = H (MgNo3)2
Heating Magnesium hydroxide Mg H2 = Mg +2 and H -2