H2SO4 + Fe => FeSO4 + H2
n(H2)=6,72\22,4=0,3моль
m(H2SO4)=0,3*98=29,4г
m(рас-ра)=29,4*00,5=1,47г
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H2SO4 + Fe => FeSO4 + H2
n(H2)=6,72\22,4=0,3моль
m(H2SO4)=0,3*98=29,4г
m(рас-ра)=29,4*00,5=1,47г