31.5=155nha bạn k minh đi
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mot khoi kim loai co the tich 3,2 cm3 can nang 22,4g hoi 1 khoi kim loai cung chat co the tich 4,5 cm3 can nang bao nhieu g
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Giai day du giup minh nhe , minh dang can gap.
Giai dung minh tich cho .
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