Răspuns:
c= mdx100/ms---> md= cxms/100= 10x100/100g=10gCuSO4
M,CuSO4=160g/mol
M,Cu(OH)2=98g/mol
160g.....................................98g
CuSO4 + 2NaOH---> Cu(OH)2↓ + Na2SO4
10g...................................x
x=m=6,125g precipitat
Explicație: