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ChanHung
2 năm trước
hòa tan 15,02 g hỗn hợp gồm cacl2 và bacl2 vào nước đc 600ml ddA . lấy 1/10 dd A cho pư vs dd agno3 dư thu đc 2,87 g kết tủa a, tính số g mỗi muối trg hh đầu b, tính CM các muối có trong dd A AI GIÚP EM VỚI EM CẦN GẤP Ạ EM CẢM ƠN
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