даноm1(ppa H2SO4) = 126 gW1(H2SO4) = 10%m2(ppa H2SO4) = 344 gW2(H2SO4) = 18%m3(H2SO4) = 40 gm(H2O) = 100 g-------------------W общ (H2SO4)-?m1(H2SO4) = 126* 10% / 100% = 12.6 gm2(H2SO4) = 344*18% / 100% = 61.92 gm общ (H2SO4) = m1(H2SO4)+m2(H2SO4 + m3(H2SO4) m общ (H2SO4)= 12.6 + 61.92+40 = 114.52 gm общ (ppa H2SO4) = m1(ppa H2SO4) + m2(рра H2SO4) + m3(H2O)+m3 (H2SO4 m общ (ppa H2SO4) = 126 + 344 + 100+40 = 610 gW общ (H2SO4) = m общ (H2SO4) / m общ (ppa H2SO4) * 100% W общ (H2SO4) = 114.52 / 610 * 100% = 18.77%ответ 18.77 %