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Haisoan12345
2 năm trước
giải thích các bước lm hộ e vs ạ .Hoà tan 2,8 gam kim loại sắt với 50ml dung dịch HCl (D = 1,18g/ml) thì vừa đủ. Nồng độ C% các chất sau phản ứng. A) 10,275% B) 14,1% C) 10,29% D) 10,29% FeCl2 và 0,162% H2
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