40g*10%=4g
H2SO4+2NaOH=Na2SO4+2H2O
98 80
X 4g
X=4.9g
4.9g/100g=4.9%
200t*4.9%=9.8t
H2SO4+Ca(OH)2=CaSO4+2H2O
98 74
9.8t y
y=7.4t
7.4t/75%=9.87t
40g*10%=4g
H2SO4+2NaOH=Na2SO4+2H2O
98 80
X 4g
X=4.9g
4.9g/100g=4.9%
200t*4.9%=9.8t
H2SO4+Ca(OH)2=CaSO4+2H2O
98 74
9.8t y
y=7.4t
7.4t/75%=9.87t