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phungthilanhuong8894
2 năm trước
1) đốt cháy hoàn toàn 7,8g hỗn hợp Mg và Althu đc 14,2g hai oxit . Tính % khối lượng mỗi kim loại trong hỗn hợp đầu 2) Hóa tan 22,2g hỗn hợp Al và Fe vào dung dịch HCl thu đc 13,44l khí (ở đktc) . Tính % khối lượng mỗi kim loại trong hỗn hợp đầu làm đầy đủ , chính xác giúp mk mk sẽ tick sao + cảm ơn +ctlhn ạ
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