w1(H2SO4) = (m(H2SO4)/m1(раствора))*100%
m(H2SO4) = m1(раствора)*w1(H2SO4)/100% = 150*30%/100% = 45(г)
w2(H2SO4) = (m(H2SO4)/m2(раствора))*100%
m2(раствора) = m(H2SO4)*100%/w2(H2SO4) = 45*100%/5% = 900(г)
mдоб(H2O) = m2(раствора) - m1(раствора) = 900 - 150 = 750(г)
Ответ: mдоб(H2O) = 750 г
w1(H2SO4) = (m(H2SO4)/m1(раствора))*100%
m(H2SO4) = m1(раствора)*w1(H2SO4)/100% = 150*30%/100% = 45(г)
w2(H2SO4) = (m(H2SO4)/m2(раствора))*100%
m2(раствора) = m(H2SO4)*100%/w2(H2SO4) = 45*100%/5% = 900(г)
mдоб(H2O) = m2(раствора) - m1(раствора) = 900 - 150 = 750(г)
Ответ: mдоб(H2O) = 750 г