n(NH4+)=n(NH3)=13.44L÷22.4L/mol=0.6mol
n(SO42-)=n(BaSO4)=46.6g÷233g/mol=0.2mol
所以n{(NH4)2SO4}=0.2mol n(NH4NO3)=0.6mol-0.2mol×2=0.2mol
m{(NH4)2SO4}=0.2mol ×132g/mol =26.4g m(NH4NO3)=0.2mol×80g/mol=16g
质量分数ω{(NH4)2SO4}=26.4g÷50g×100%=52.8%
ω(NH4NO3)=16g÷50g×100%=32%