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thaonguyenils1619
2 năm trước
Hòa tan 16,8 gam CaO vào nước được 500 ml dung dịch A. a. Tính CM của dung dịch A. b. Hỗn hợp X gồm MgCO3, BaCO3 có thành phần thay đổi trong đó chứa a% MgCO3. Hòa tan 30,85 gam hỗn hợp X bằng dung dịch HCl dư thu được V lít CO2 (đktc). Hấp thụ toàn bộ lượng khí CO2 vào dung dịch A thu được m gam kết tủa. Tính a để: - m lớn nhất. - m nhỏ nhất.
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