[Hoá 10]

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thupham22011998

$2Al+3CuSO_4-->Al_2(SO_4)_3+3Cu$

$x.........1,5x....................1,5x$

$m$ kim loại tăng$=m Cu-m Al=64.1,5x-27x=2,76$

-->$x=0,04 mol$

-->$n CuSO_4=0,06 mol$
 
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