Respuesta :

M(SO₂)=64.07 g/mol
vₓ=22.4 l/mol   (STP)
v=12 l

n(SO₂)=v/vₓ

m(SO₂)=n(SO₂)M(SO₂)=vM(SO₂)/vₓ

m(SO₂)=12*64.07/22.4=34.32 g