从有关资料查到：20%的硫酸其密度是1.14g/ml ；98%的硫酸其密度是1.84g/ml ；因此配硫酸溶液需要的浓硫酸体积V是:1.14g/ml*500ml*20%=1.84g/ml*V*98%V=(1.14g/ml*500ml*0.2)/(1.84g/ml*0.98)=63.2ml .需要的水体积是...