Ngày tải lên :
19/09/2012, 17:20
... Đs: 39 , 25% - 2-đktc a 36 ,56 g b 27,05g c 24,68g d 31 ,36 g - b 10, 2 35 g c 24,68g a 56 , 737 5g b 32 ,04g c 47 ,39 25g 2O3, - d 75, 828g Fe3O4 a 242,3g b 268,4g c 189,6g 2(SO4 )3 d 254 ,9g a b 0, 75 c 1, 75 d ... -đktc G 2O3 a 5, 4885g b 4 ,31 85g a 24,96g b 28,08g c 5, 6 53 5 g d 3, 8 6 35 g H2 c 26 ,52 g 2(SO4 )3 Cho 400ml d 27 ,30 g 3, FeCl2, FeCl3 a 2,4 85% 2 b c 2,468% ddX: d 3, 648% c 138 ,62g 2O3 d 1 45, 26g b 3, 248% ... 77 ,31 % d 26,8g d 0,4M c 49,87% 2O3, Cr2O3 2O3 d 29,87% 2O3 a 20 ,33 % b 66,67% a 150 b 100 c 50 ,67% 2O3 d 36 ,71% a 0, 45 c 200 b 0 , 35 d 30 0 2(SO4 )3 c 0, 25 C3 d 0, 05 a 0 ,55 b 0,60 c 0,40 d 0, 45 1M...