Một mẩu hợp kim thiếc, Chì có khối lượng m=664g, khối lượng riêng D= 8,3g/cm^3. Hãy xác định khối lượng riêng của thiếc và chì trong hợp kim. Biết khối lượng riêng của thiếc la D1=7,3 g/cm^3, của phần chì là D2=11,3 g/m^3 và coi rằng thể tích của hợp kim bằng tổng thể tích các kim loai thành phần. Nhớ làm ra chi tiết nhé 60đ đó theo cách dễ hiểu nhất nhé

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