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Chelsea
2 năm trước
cho 3.1g Na2O phản ứng vừa đủ với nước thu được 4 g chất NaOH. chất NaOH cho phản ứng hoàn toàn với chất H2SO4 tạo thành chất Na2SO4 và nước. tính khối lượng nước tham gia phản ứng
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