Дано:
w=9,3%
p=1,05
n=0,35
V(H2SO4) - ?

n(H2SO4) = 0.35 моль ==> m(H2SO4) = n*M = 0.35 * 98 = 34.3 г ( 100% )W(H2SO4) = 9.3% ==> m(H2SO4) = (34.3/100)*9.3 = 3.1899 гp(H2SO4) = 1.05 г/см³;m = p*V ==> p = m/V ==> V = m/p = 3.1899/1.05 = 3.038 мл