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Un volum de 500 cm3 solutie contine 120 g hidroxid de sodiu si are ρ= 1,220 g/cm3 .
Ce concentratie procentuala are solutia ?


Răspuns :

d=ms/Vs
=>ms=d•Vs
ms=1,22•500=610 g

Cp=(md•100)/ms
Cp=(120•100)/610=....... calculezi