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vanthanhnhan257
2 năm trước
1 mol khí O2 có khối lượng bằng 32 g 0,25 mol khí O2 có khối lượng bằng ? Làm như này đúng không ạ : ÁP dụng công thức : m=n.M = 0,25.32 = 8 g
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