Ответ:

дано

p(H2SO4) = 1.26 г/см3

m(NaOH) = 60 g

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V(H2SO4) - ?

2NaOH+H2SO4-->Na2SO4+2H2O

M(NaOH) = 40 g/mol

n(NaOH) = m/M = 60 / 40  = 1.5 mol

2n(NaOH) = n(H2SO4)

n(H2SO4) = 1,5 / 2 = 0.75 mol

M(H2SO4) =  98 g/mol

m(H2SO4) = n*M = 0.75 * 98 73.5 g

V(H2SO4) = m(H2SO4) / p(H2SO4) = 73.5 / 1.26 = 58.3 mL

ответ 58.3 мл

Объяснение: