$M_{CuSO_4} = 64 + 32 + 16.4 = 160(đvC)$
$5M_{CaCO_3} = 5(40 + 12 + 16.3) = 500(đvC)$
$M_{Ca(OH)_2] = 40 + (16 + 1).2 = 74(đvC)$
\(M_{CuSO_4}=1.64+1.32+4.16=160\left(đvC\right)\)
\(M_{5CaCO_3}=5.40+1.12+3.16=260\left(đvC\right)\)
\(M_{Ca\left(OH\right)_2}=1.40+\left(1.16+1.1\right).2=74\left(đvC\right)\)
chi tiết lắm r đấy