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Thanhngoc0604
2 năm trước
cho x(g) so3 vào 200g dung dịch h2so4 9,8%.ta thu được sung dịch mới có nồng độ cồn 19,6%.tính x nếu tính ko ra thì chắc mk ghi sai đề chỗ nồng độ cồn thành nồng đọ mol còn nếu ko sai thì thôi
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