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nhatmadridista1509
2 năm trước
Cho 200ml dung dịch Ca(No3)2 1M tác dụng với 150ml dung dịch Na2Co3 0,8M. a) tính khối lượng kết tủa b) tính nồng độ ion trong dung dịch sau phản ứng. Mn giúp e với ạ
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