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phamthihung
2 năm trước
1Hòa tan hết 16,8 gam Fe trong dung dịch HCl đủ thu được V lít H2 ( đktc) . Giá trị V là ( Fe=56) 2Dãy chất nào tan trong nước tạo dung dịch Na2O, SO2, SiO2, Mg K2O, SO2, N2O5, Ca CO, NO2, P2O5, NO SO3, SiO2, P2O5, N2O5
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