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viettri184
2 năm trước
1: Một dung dịch chứa 0,02 mol Cu2+, 0,03 mol K+, x mol Cl– và y mol SO42–. Tổng khối lượng các muối tan có trong dung dịch là 5,435 gam. Giá trị của x và y lần lượt là : A. 0,03 và 0,02. B. 0,01 và 0,03. C. 0,02 và 0,05. D. 0,05 và 0,01. Giải ra giúp mình nha !!
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