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quanghotrinh88
2 năm trước
tính số mol: a) 29.25g dd natri clorua 20% ; 11,6g dd kali sunfat 15% ; 37,6g dd đồng nitrat 50% b) 153,36ml dd hidro clorua 20%- khối lượng riêng d=1,19g/cm3 ; 300ml dd axit suunfuric 45%- d=1,84g/cm3 ; 150ml dd axit nitric 10%- d=1,51g/cm3
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