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dat123123
2 năm trước
cách viết sau lần lượt chỉ ý gì : 3Cu ,H2O ,2Cl2 4O b) cho hợp chất axit phốt pho ric biết rằng trong pt gồm 3H, 1P ,4O hãy viết ct hóa học và nếu ý nghĩa giúp mk vs cảm ơn
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