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Vs=200l solutie CuSO4
Cp= 1%
¶=1,29 grame/ cm3
...
mCuSO4=?


Răspuns :

p=ms/Vs =>ms=p*Vs 
ms=1,29g/ml*200000ml=258000g=258kg solutie CuSO4 
c=md*100/ms => md=c*ms/100 
md=1*258/100=2,58kg CuSO4