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Calculati masa de solutie de acid sulfuric de concentratie 49% , care reactioneaza cu 320 g oxid.
Nu stiu sigur daca are legatura cu formula :
Cu+H2SO4->CuSO4+H2O


Răspuns :

c=49%
md=320g

ms=?
c=
⇒ms
C=[tex] \frac{ms}{md} [/tex]×100⇒ms=[tex] \frac{md*100}{c} [/tex]=[tex] \frac{320*100}{49} [/tex]=[tex] \frac{32000}{49} [/tex]≈653,06 g