Khi hòa tan hỗn hợp Zn , ZnO ta cần 100,8 ml dd HCL 36,5% : d= 1,19g/ml thu được 8,96 lít khí a/ Tính khối lượng mỗi chất trong hỗn hợp đầu b/ Tính khối lượng muối ZnCl2 và C% của dd thu được

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