Question

I need help balancing.
a. _____ Ba(NO3)2(aq) + _____ NH2SO3H(aq) -> _____ Ba(NH2SO3)2(s) + _____ HNO3(aq)

b. _____ Ba(NO3)2(aq) + _____ NH2SO3H(aq) + ____ H2O(l) -> ____ BaSO4(s) + ____ NH4NO3(aq) + ___ HNO3(aq)

c. ____ Ba(NO3)2(aq) + ____ NH2SO3H(aq) + ____ H2O(l) ->____ Ba(NH2)2(s) + ____ H2SO4(aq) + ____ HNO3(aq)