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vietmix2k5
2 năm trước
Cho 120 gam dung dịch CuSO4 20% tác dụng vừa đủ vs dung dịch NaOH 10% a. Viết phương trình hóa học xảy ra b.Tính khối lượng dung dịch NaOH 10% c. Tính nồng độ phần trăm của chất tan trong dung dịch thu đc sau phản ưng
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