Balance these equations please?

Question

NH3 + Na > NaNH2 + H2

BaCl2 + Na2SO4 > BaSO + NaCl

SO2+ NaOH > Na2 SO3 + H2O(L)

Al+ H2SO4 > AL2(SO4)3 +H2

Answer 1

2 NH3 + 2 Na > 2 NaNH2 + H2

(This looks weird. Could you double check? I don't think there's Na NH2...)

BaCl2 + Na2SO4 > BaSO4 + 2 NaCl

(I believe you have an error on #2... I believe it is BaSO4)

SO2+ 2 NaOH > Na2 SO3 +  H2O(L)

2 Al+ 3 H2SO4 > Al2(SO4)3 +3 H2

Answer 2

2NH3+2Na--->2NaNH2+H2

BaCl2+Na2SO4------>BaSO4+2NaCl

SO2+2NaOH---------->Na2SO3+H2O

2Al+3H2SO4-------->Al2(SO4)3+3H2

Answer 3

2NH3 + 2Na --> 2NaNH2 + H2

BaCl2 + Na2SO4 --> BaSO4 + 2NaCl

SO2 + 2NaOH --> Na2SO3 + H2O

2Al + 3H2SO4 --> Al2(SO4)3 + 3H2